Questions on Algebra: Equations answered by real tutors!

Tutors Answer Your Questions about Equations (FREE)

Question 40490: 31x-8(3x-0.745)=6x+0.205 solve
Click here to see answer by Nate(3500)

Question 40487: 3x-2y=6 solve for x
thank you
Click here to see answer by Nate(3500)

Question 40495: The length of a rectangle is 2cm more than twice its width. If the perimeter of the rectangle is 52cm, find the dimensions of the rectangle.
Click here to see answer by Nate(3500)

Question 40506: practice 2.2
Can you help me solve for x .thank you

3/7 x =15
Click here to see answer by Nate(3500)

Question 40493: solve x/6 + 3 =9
Click here to see answer by Nate(3500)

Question 40510: The lenght of one of the equal legs of an isosceles triangle is 8 cm less than 4 times the lenght of the base. If the perimeter is 29 cm, find the lenght of one of the equals legs
Click here to see answer by checkley71(8403)

Question 40512: Can someone help me solve this problem
Determine if the given rates are equivelent
?
12 gallons of paint/8,329 ft.2 = 9 gallons of paint/1,240 ft.2
Click here to see answer by Nate(3500)

Question 40550: 2/5x=-10
Click here to see answer by tutorcecilia(2152)

Question 40583: I need help solving this equation: 2x-5=5x-9
Click here to see answer by tran3209(100)

Question 40639: Solve30 each of the following equations for x

3x- 5 (3x-7)=2(x+9)+45
Click here to see answer by tran3209(100)

Question 40638: 28. Solve each of the following equations for x

2(x-3)-3 (x+5)= 3 (x-2)-7
Click here to see answer by tran3209(100)

Question 40637: 26. Solve each of the following equations for x

7(3x+4)=8 (2x+5) + 13
Click here to see answer by tran3209(100)

Question 40650: Grrr i'm trying to figure out the mistake i made when i was solving this equation
How could I avoided it?
the equation 2(x-3) = x +3
First step in solving is 2x-2 =x +3

Click here to see answer by siouxie(6)

Question 40641: 8 + 1/x
________
4 - 1/x

Click here to see answer by Nate(3500)

Question 40721: write an algebraic equation for the english statement "substract 5 from the sum of x and 7 time 3 and the result is 20.
Click here to see answer by checkley71(8403)

Question 40708: -3(10x-3)+10(3x-3)=x-7
Click here to see answer by checkley71(8403)

Question 40767: prob. 74_
solve and graph the solution for the inqualities.
7(x-3) >5x -14
<------------>
Click here to see answer by stanbon(57395)

Question 40769: section 2.7
2 TIMES A NUMBer ,increased by 28, is less than or equal to 6 times that number.
x is nonnegative
x is nonegative
a) x> 0
-

b) x> 5
_
c) x <5
_

d) x > 0

e) x < 5
f < x < 0

Click here to see answer by longjonsilver(2297)

Question 40784: i MADE The mistake when I was solving equations and did this

The equation 2(x-2) = x +3
First step in solving 2x-2=x+3
What error did I make? How could I avoided it? thanks
Click here to see answer by Earlsdon(6287)

Question 40578: a/2 - 3/a (a divided by 2 minus 3 over a)
Click here to see answer by astromathman(21)

Question 40820: Write the equation in slope-intercept form.

3x - 10y = -6
Click here to see answer by checkley71(8403)

Question 40820: Write the equation in slope-intercept form.

3x - 10y = -6
Click here to see answer by tran3209(100)

Question 40821: Let x represent the number of gallons of gas sold at $ 1.20 per gallon, and let y represent the total cost of the gasoline (in dollars). Write an equation for this situation. Then give the ordered pair with an x-value of 12 associated with this equation.

Click here to see answer by fractalier(2101)

Question 40822: Solve the system by elimination. If the system is inconsistent or has dependent equations, say so.
-7x + 5y = -20
-3x - 2y = 8
Click here to see answer by fractalier(2101)

Question 36940: Solve and show all work please. Thank you very much!

Click here to see answer by tran3209(100)

Question 40932: problem 83 need help.

2 times a numbed, increaded by 28, is less than or equal to 6 times that number.
x is nonegative.
I thought it was x > 0 but I was wrong..
Click here to see answer by fractalier(2101)

Question 40933: problem 84 need help... done wrong :(
I thought it was x < 5 but I was wrong..

2 times a numbed, increaded by 28, is less than or equal to 6 times that number.
x is negative

Click here to see answer by stanbon(57395)

Question 37021: Jim can fill a pool carrying bucks of water in 30 minutes. Sue can do the same job in 45 minutes. Tony can do the same job in 1 ½ hours. How quickly can all three fill the pool together?
Click here to see answer by fractalier(2101)

Question 40969: Either perform the indicated operation or solve the equation, whichever is appropriate.

3/10 = 5/x
Click here to see answer by fractalier(2101)

Question 40970: Either perform the indicated operation or solve the equation, whichever is appropriate.
-2/x = 3/x+2
Click here to see answer by psbhowmick(529)

Question 41049: I need help
I am in math 8/7 with pre algerbra and it says to simplify this problem
3x+y-x+y

Click here to see answer by Nate(3500)

Question 41066: Solve the system by elimination. If the system is inconsistent or has dependent equations, say so.
-7x + 5y = -20
-3x - 2y = 8
Click here to see answer by stanbon(57395)

Question 41069: Solve by any method. Assume a and b represent nonzero constants.
ax + by = 3
ax - by = 10

Click here to see answer by stanbon(57395)

Question 41068: Solve the system by substitution.
x + y = -7
x - y = 13
Click here to see answer by fractalier(2101)

Question 41053: I need help
I am in math 8/7 with pre algerbra and it says to simplify this problem
(-3x)(2xy)(-xy^2)
Click here to see answer by fractalier(2101)

Question 41017: simplify

3-2-7+4
the 2-7+4 is in the absolute value
show work
Click here to see answer by fractalier(2101)

Question 41099:
Click here to see answer by psbhowmick(529)

Question 41139: Given that the equation of a circle is x^2 + y^2 - 10x + 4y + 13=0,find its center and its radius.
Click here to see answer by venugopalramana(3286)

Question 41259: (x+1 / 3) + (x+2 / 7) = 2 Solve for X
Click here to see answer by Nate(3500)

Question 41282: I asked the question about 7x+y=13 and someone answered it
but one of the questions later says use the result to find y when x=-1,0,2
Click here to see answer by zeynep(43)

Question 40343: Please help me with the following equations.
Solving a linear equation with several occurances of the variable. Simply your answer as much as possible.
Solve the following for w
2(w- 3)+2w = 14

Solve for x. Write your response as a fraction in lowest terms.
7/4x + 4/3 = 1/4x + 7

Solve the following equation for x. Simply our anwser as much as possible.
-5(x + 8) = 4x + 32

Solve the following for x. Write your answer as a reduced fraction
-2(x-4)+7=-6(8x-6)+x

Solve the following equation for t. Simply your answer as much as possible.
8t-4/5 + 9t-2/2=47

Click here to see answer by zeynep(43)

Question 41293: Can someone help me solve this problem?
(Round to the nearest hundredth)
72 in = _________ cm
Thanks,
Sher
Click here to see answer by zeynep(43)

Question 41318: solve
4x+7=3-5x
show work
Click here to see answer by tran3209(100)

Question 41451: The numerator of a fraction is 5 less than the denominator. If 1 is added to both the numerator and the denominator, the fraction would become 2/3. Find the fraction.
This is what I have done :-
Let the denominator to be n
n–5/n and now add 1 to both the numerator and the denominator
Therefore, n-5+1/n+1 = n-4/n+1=2/3
n-4 2
___ = _
n+1 3
3(n-4) = 2(n+1)
3n-12 = 2n+2
n=12+2
n=14
Now n=14, thus denominator is n+1= 14 + 1 = 15 while numerator = n-4 = 14-4 = 10
Therefore, numerator = 10 and denominator = 15 but my teacher told us is 9 and 36 respectively instead.
I still don't really know where is / are my mistake(s). Please help.
Thank you so much.
Click here to see answer by askmemath(368)

Older solutions: 1..45, 46..90, 91..135, 136..180, 181..225, 226..270, 271..315, 316..360, 361..405, 406..450, 451..495, 496..540, 541..585, 586..630, 631..675, 676..720, 721..765, 766..810, 811..855, 856..900, 901..945, 946..990, 991..1035, 1036..1080, 1081..1125, 1126..1170, 1171..1215, 1216..1260, 1261..1305, 1306..1350, 1351..1395, 1396..1440, 1441..1485, 1486..1530, 1531..1575, 1576..1620, 1621..1665, 1666..1710, 1711..1755, 1756..1800, 1801..1845, 1846..1890, 1891..1935, 1936..1980, 1981..2025, 2026..2070, 2071..2115, 2116..2160, 2161..2205, 2206..2250, 2251..2295, 2296..2340, 2341..2385, 2386..2430, 2431..2475, 2476..2520, 2521..2565, 2566..2610, 2611..2655, 2656..2700, 2701..2745, 2746..2790, 2791..2835, 2836..2880, 2881..2925, 2926..2970, 2971..3015, 3016..3060, 3061..3105, 3106..3150, 3151..3195, 3196..3240, 3241..3285, 3286..3330, 3331..3375, 3376..3420, 3421..3465, 3466..3510, 3511..3555, 3556..3600, 3601..3645, 3646..3690, 3691..3735, 3736..3780, 3781..3825, 3826..3870, 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