Questions on Algebra: Equations answered by real tutors!

Tutors Answer Your Questions about Equations (FREE)

Question 716075: how do you solve equations by adding or subtracting fractions with variables? Example:m-(-7/10)= -1 1/5
Click here to see answer by Alan3354(69443)

Question 716224: what is the answer to -7(z+3)+4(3z-4)=4(z-3)+9?
Click here to see answer by checkley79(3341)

Question 716235: Use the Distributive Property to multiply a binomial by a binomial (3y-2)(4y-1)
Click here to see answer by jim_thompson5910(35256)

Question 716297: Solve m=x+y+z/3 solve for z.
Click here to see answer by solver91311(24713)

Question 716300: Solve D=a/2(2t-1) solve for t.
Click here to see answer by lynnlo(4176)

Question 716318: Match the equation with it's solution.
1 4y - 3 = 1 A y= -1
2-3 + 4 = -1 B y= 1/2
3-4y - 3 = 1 C y=1
4 3y - 4 = -1 D y= 1 2/3

Click here to see answer by lynnlo(4176)

Question 716315: 3x/10=3/10
Click here to see answer by lynnlo(4176)

Question 716403: -x^2+y=9
Click here to see answer by Alan3354(69443)

Question 716505: The sum of two consecutive integers is one less than twice the greater integer. Find the integers.
Click here to see answer by DrBeeee(684)

Question 716574: Write an equation with slope 3 through (6,-5)
Through (-4,-6) and (-5,8)
Through (6,-1) and parallel to y=3x+4
Click here to see answer by lwsshak3(11628)

Question 716630: Solve for x:
R=1/x+ 1/r
thanks
Tony
Click here to see answer by lynnlo(4176)

Question 716927: How do you do a problem like this:
X+1/8x=54?
Click here to see answer by rfer(16322)

Question 716981: what is the y-intercept of the following equation Y=14x-5
Click here to see answer by rfer(16322)

Question 717047: 2a+5=a+7
Click here to see answer by lenny460(1073)

Question 717081: 2(5x-3) - x + 3(3x-2)

Click here to see answer by Weicongs(1)

Question 717321: 0+50x1-60-60x0+10=
Click here to see answer by rfer(16322)

Question 717320: 5x-3y=8 and -5x+2y=-7
Click here to see answer by lynnlo(4176)

Question 717386: 0.4(x-6)=0.7(2x+3)+0.5
Click here to see answer by ethai18(3)

Question 717381: 3/4(2x+6)-3=3(x+3)
Click here to see answer by ethai18(3)

Question 717450: Solving equations with variables on each side
8-P=-12-3P
how to solve showing work
Click here to see answer by josgarithmetic(39617)

Question 717535: please help me solve this :) would love to have an explanation on how to do it too
simplify:
sqrt( k^4l^2m )
square root of "k" to the power of 4, "l" to the power of 2 and "m"
Click here to see answer by josgarithmetic(39617)

Question 717524: Which point lies on the line defined by 5x-4y=9
(1,1)
(3,-6)
(1,-1)
(3,-1)
Click here to see answer by josgarithmetic(39617)

Question 717657: Ok so the variable for this equation is on both sides and I need to use addition or subtraction to collect the variable on one side and the solve.
The problem is: 2x - 1 = 8 - x
The answer is supposed to come out to 3 but I'm not getting that.
Here's my work:
2x - 1 = 8 - x
2x - 2x - 1 = 8 - 2x - x
1 = 8 - 2x
1 + 8 = 8 - 2x + 8
9 = ?????
And I don't know what to do after that to get my final answer.
Help would be much appreciated. If I know how to get the answer to this then I'll be able to solve the rest of the math equations I have.

Click here to see answer by stanbon(75887)

Question 717685: Since the variable exists on both sides, I need to use addition or subtraction to collect the variable on one side and get what 'x' equals.
6x - 2 = x + 13

Click here to see answer by checkley79(3341)

Question 717664: 6+x<1 inequalitie
Click here to see answer by checkley79(3341)

Question 717737: If f(x)=x/(x-3) and g(x)=2x-1, find (f-g)(x).
My choices are:
A. (-2x^2+8x-3)/(x-3)
B. (-2x^2+6x+1)/(x-3)
C. (-2x^2+5x-3)/(x-3)
D. (2x^2+6x+3)/(x-3)
If I had to guess I would say either A or C, but I have no idea. Thank you for your help!
Click here to see answer by jim_thompson5910(35256)

Question 717545: a trucker traveling along a highway encounters road construction so that traffic is down to single lane. After driving 30 minutes, the road construction ends and the trucker is able to increase his speed by 64 mph for 4.5 hours. if his entire trip is 303 miles, what was his speed in the road construction?
Click here to see answer by jndarrell(58)

Question 717745: the sum of of 4 times a number, and -2, is equal to the sum of 5 times a number, and -2. Find the number
Click here to see answer by jndarrell(58)

Question 717539: if two planes leave an airport at the same time with one flying west at 570 mph and the other flying east at 580 mph, how long will it take them to be 3450 miles apart?
Click here to see answer by jndarrell(58)

Question 717764: An employee's annual salary was increased from $22,464.00 to $24,710.40 last year. If it is increased by the same percent this year, what will be the employee's salary?
(A) $26,782.64
(B) $27,181.44
(C) $27,438.52
(D) $27,982.64
Click here to see answer by jndarrell(58)

Question 717767: 2 + 7a - 5 - 4a and
3(4y + 2) - 2(3-y)
Do I use a scientific calculator to work this out and if so can you explain how to get the answer. Thanks
Click here to see answer by rfer(16322)

Question 717782: 12 - 8d = -8
Click here to see answer by jim_thompson5910(35256)

Question 717802: A certain number, x, is doubled and then decreased by 11. The result is equal to the quotient of 5 more than the number and 3.
Can you pls help me write an equation to represent the above statement, no need to solve it
I'm getting:
2x - 11 = x over (5x + 3)
Thank you for taking the time to help me, i really appreciate it

Click here to see answer by jsmallt9(3758)

Question 717960: solve for x: 35-(3-22x)=2[10x-3(x+4)]
Click here to see answer by oscargut(2103)

Question 717904: Solve the following system of equations.
9x + 5y = -66
3x + y = -12
Click here to see answer by oscargut(2103)

Question 717975: A boat traveled 210 miles downstream and back. The trip downstream took 10 hours. The trip back
took 70 hours. What is the speed of the boat in still water? What is the speed of the current?
Click here to see answer by Alan3354(69443)

Question 717954: will someone please help me,I keep asking for help but no answer here is the problem
calculate the boiling point of a cooling system using a 16PSI pressure cap and a 50-50 mixture of antifreeze and water. assume the non-pressurized boiling point is 223Degrees F.,and each pound of pressure raises the boiling point by 3 1/4 degreesF. show all calculations. this problem is in my automotive systems book Please someone help, I am home schooling and need help
Click here to see answer by lynnlo(4176)

Question 718052: 15x+2=3x=2
I already know the answer but I need to know the steps How do I do it?

Click here to see answer by Menjax(62)

Question 718067: This was a big debate on Facebook and so many people have different answers. Can you please answer this. Thank you!
6/2(2+1) Everyone put either 9 or 1.
Click here to see answer by josgarithmetic(39617)

Question 718061: Can you show me the steps on how to do this equation?
x/5 = (x-2)/3
Click here to see answer by kngt(2)

Question 718112: A number x is five more than two times x minus three
Click here to see answer by oscargut(2103)

Question 718138: 4(3.5-x)(3.5-x)
Click here to see answer by checkley79(3341)

Question 718195: lamar's summer job is mowing lawns for landscapers. his pay is $7.50/h. Lamar also makes $11.25/h for any time over 40h that he works in one week. he worked 40 h last week plus n overtime hours and made $339.38. how much over time hours did he work?
Click here to see answer by checkley79(3341)

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