Questions on Algebra: Evaluation of expressions, parentheses answered by real tutors!

Tutors Answer Your Questions about expressions (FREE)

Question 374818: Simplify. Please show all of your work.
-10x + 2x2 – 6x3 + 5(6x + 4x2 – 3x3)

Click here to see answer by vasumathi(46)

Question 374817: -4/9+ 3/10
. Perform the indicated operation and, if possible, simplify. Please show all of your work
Click here to see answer by vasumathi(46)

Question 374816: Area of a triangle with base b and height h
a=1/2 bh, for b
Click here to see answer by vasumathi(46)

Question 374814: solve t-7.4=-12.9
Click here to see answer by vasumathi(46)

Question 375057: 12-3n+4(2n+5)
Click here to see answer by jim_thompson5910(28598)

Question 375644: Evaluate and, if possible, simplify.
-6-x/12 for x = -6
Click here to see answer by rfer(12677)

Question 375646: Simplify. Please show all of your work.
2-3^3/27-7+30
Click here to see answer by rfer(12677)

Question 375645: Simplify. Please show all of your work.
5a^2 – 12b^2 – 3(a^2 – 10b^2)

Click here to see answer by user_dude2008(1861)

Question 375648: Solve using the addition principle.
a – 3 = 1

Click here to see answer by mananth(12270)

Question 375760: How is this supposed to be written out? I think it is supposed to be 5x=75+2y but I am not sure. Is it even possible to write out?
"Five times a number is 75 greater than two times a number"
Click here to see answer by jessica43(140)

Question 375818: Solve the equation. Be sure to show all of your work.
10n – 9 = 61

Click here to see answer by Fombitz(13828)

Question 375817: Simplify.
-4c – 7c – (-8 + c)

Click here to see answer by Fombitz(13828)

Question 375815: Solve using the multiplication principle.
4b = -76

Click here to see answer by Fombitz(13828)

Question 375816: Solve the equation. If it is an identity (all real numbers) or a contradiction (no solution), so state.
x – 5 + 6x = -2 + 7x

Click here to see answer by ewatrrr(10682)

Question 375916: 6a-3x-2y,ifa=3,x=7,and y
=4
Click here to see answer by jim_thompson5910(28598)

Question 375962: "How do I simplify a radical expression?"
Click here to see answer by jim_thompson5910(28598)

Question 376044: 6m-[2m-(m+10)+5m]+8
Click here to see answer by nyc_function(2733)

Question 376043: 4[a-2(3a+4)]-7a-12
Click here to see answer by nyc_function(2733)

Question 376124: What is the order of operations of
-(8x + 4)

Click here to see answer by rfer(12677)

Question 376256: how would you put would you put this equation:(4x9)÷(16-14)in words
Click here to see answer by nyc_function(2733)

Question 376245: Perform the indicated operation -21 -(-9)/-21 - (-21)
Click here to see answer by checkley79(3056)

Question 376322: Calculate the answers in the following
1) - | | 30 + (-11) | + (-17) |

Click here to see answer by jim_thompson5910(28598)

Question 376718: Solve the problem. Be sure to show all of your work.
At many colleges, the number of full-time-equivalent students, f, is given by
f=n/15
where n is the total number of credits for which students enroll in a given semester. Determine the number of full-time-equivalent students on a campus in which students registered for a total of 25,350 credits.

Click here to see answer by rfer(12677)

Question 376733: Solve the equation. Be sure to show your work. All final answers must be in simplest form
n-1/6=8
Click here to see answer by robertb(4012)

Question 376730: Solve using the addition and multiplication principles. Be sure to show all of your work.
4x – 6 > -6

Click here to see answer by jim_thompson5910(28598)

Question 376731: Solve using the multiplication principle.
-6 > -2b

Click here to see answer by robertb(4012)

Question 377165: Solve for x
25 = -5/9x
Simplify your answer as much as possible
Click here to see answer by Alan3354(30993)

Question 377959: Find -x when x= -33/28
Thank you
Click here to see answer by richard1234(5390)

Question 377949: How do you solve -2/3 * (-1/3)
Thank you
Click here to see answer by edjones(7569)

Question 377970: Thank you for being available this evening,
I wanted to know about the 'signs' in between algebra problems with brackets. Here is my example problem:
[3(x+2)+2x]-[4(y+2)-3(y-2)]
Will the minus sign between the problems on the left and right side change the answer at all? Or will it make a difference in the outcome?
Click here to see answer by edjones(7569)

Question 377969: Subtract the following -6 - (-4)
I get -2 but am not sure if I am doing it correctly or not. Thank you
Click here to see answer by brittj97(1)

Question 377989: What is 100pg/625q equals?
Click here to see answer by Fombitz(13828)

Question 378214:
Click here to see answer by Fombitz(13828)

Question 379199: The area of triangle with base, b and height h, is given by
a=1/2bh
If the area of a certain triangle is 38 square centimeters and the base is 8 centimeters, what is the height? Please show all of your work.

Click here to see answer by wowitsme123(1)

Question 379299: x-3(4-5x)=8(2X-1.15)
Click here to see answer by robertb(4012)

Question 379378: 6x/16
Click here to see answer by edjones(7569)

Question 379461: Hello , I need help with this problem, I am totally lost.
How do I write this out with positive exponents ?
6^-2 a^-3 b^4
------------- there are large brackets on each side of this problem.
c^-4 d^-2
Thank you for your help.
Click here to see answer by mananth(12270)

Question 379325: x - y - (y - x) - 4 and 3x + 3(y + 2) tell whether the system has no solution, exactly one solution, or infinitely solutions.
Click here to see answer by Fombitz(13828)

Question 379466: Hello again, I have another problem here that I do not get. How would I simplify this equation ?
5 a b^2
( ------- )^2
C^3
This equation is within large brackets and to the 2nd power.
Thanks for your help.
Click here to see answer by Fombitz(13828)

Question 379598: simplify 4 to the third power / 7 to the second power
Click here to see answer by Fombitz(13828)

Question 380113: Do 5+x and x+5 represent the same expressions? Why?

Click here to see answer by kingme18(98)

Question 380347: evaluate 25^-4/2
1/33
1/625
1/52
32/256
Click here to see answer by ewatrrr(10682)

Question 380477: (x-0.8)(x-0.5)
Click here to see answer by stanbon(57412)

Question 380477: (x-0.8)(x-0.5)
Click here to see answer by mananth(12270)

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