Questions on Algebra: Equations answered by real tutors!

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Question 551737: simplify. please show all of your work
-2x+3-(-7-x)
Click here to see answer by jim_thompson5910(28593)

Question 551742: multiply. show all of your work and be sure your answer is in simplest form
-7/8.-12
Click here to see answer by jim_thompson5910(28593)

Question 551739: simplify. please show all of the steps to arrive at your answer
12.3^3-3^2+11
Click here to see answer by jim_thompson5910(28593)

Question 551590: 2x square+4x
Click here to see answer by jim_thompson5910(28593)

Question 551524: simplify. please show all of your work
-2x+3-(-7-x)
Click here to see answer by jim_thompson5910(28593)

Question 551513: divide
-72/8
Click here to see answer by jim_thompson5910(28593)

Question 551522: simplify. please show all of the steps to arrive at your answer
12.4^3-3^2+11
Click here to see answer by jim_thompson5910(28593)

Question 551478: Solve
-11 -(x+30)=41-2(5x-18)
Click here to see answer by jim_thompson5910(28593)

Question 551511: multiply. show all of your work and be sure your answer is in simplest form
-7/8.-12
Click here to see answer by jim_thompson5910(28593)

Question 551509: subtract. show all of your work. be sure your answer is simplified
-5/10 - 5/10
Click here to see answer by jim_thompson5910(28593)

Question 546603: how do i do the problem 4(2z-5)=7(z+5)
Click here to see answer by jim_thompson5910(28593)

Question 551817: Solve for x in the equation: 8(2x-3)= -16
Click here to see answer by jim_thompson5910(28593)

Question 551819: 2n2-3b,if n =3 and b= 1
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Question 551823: find the value of x when you have these equations 2x+5 5x-3 3x+2 4x-2
Click here to see answer by jim_thompson5910(28593)

Question 551831: about 2/3 of an orchestra is made up of string instruments. If 1/5 of the string instruments are violins, what fraction of the orchestra if made up of violins?
Click here to see answer by jim_thompson5910(28593)

Question 551853: -5/9 / 15/7
Click here to see answer by jim_thompson5910(28593)

Question 551876: I'm doing the following problem out of a book: ax-b=cx+d. The answer in the back of the book is x=(d+b)/(a+c). I don't get the /(a+c) part. Can you explain in more detail?
Click here to see answer by jim_thompson5910(28593)

Question 551885: I am having trouble solving this equation: c/5 + 6 = -2
I do not know what to do after I get to the point where c/5 = -8
Thanks for any help you can provide.
Click here to see answer by jim_thompson5910(28593)

Question 551965: This is really simple, bu ti have been on vacation and totally forget. If the number of professors in a college (p) and the number of students (s), and there are 17 times as many students as professors, write an algebraic equation that shows the relationship?
Click here to see answer by josmiceli(9671)

Question 551961: please help me solve this equation: 50=15-6(2x-5)

Click here to see answer by Alan3354(30993)

Question 551961: please help me solve this equation: 50=15-6(2x-5)

Click here to see answer by jerryguo41(162)

Question 552029: The sun room in their home has a width of 12 feet and a length of 15 feet. They plan to enlarge this room by increasing the width x feet so that the new perimeter of the room is 70 feet. What will be the width of the new enlarged sun room?

Click here to see answer by edjones(7569)

Question 551918: Over a 3 day weekend, you take a 592-mile trip. If you average 32 mi/gal on the trip how may gasoline did you use?
Click here to see answer by ankor@dixie-net.com(15649)

Question 552060: find the slope of each line,the line y=3x-5

Click here to see answer by unlockmath(1599)

Question 552177: Please help find the hang time for a golfball hit 80 feet into the air.
Click here to see answer by Alan3354(30993)

Question 552201: 4+5x=1
Click here to see answer by jim_thompson5910(28593)

Question 552397: please solve
4 1/3=(1/2)t
Click here to see answer by TutorDelphia(193)

Question 552387: simplify, please show all of your work
-4t^2+3t^3-4(2t^3-7t^2)
Click here to see answer by mananth(12270)

Question 552385: simplify and please show all of your work
(6-9)^2/6^2+9
Click here to see answer by JBarnum(2044)

Question 552608: solve:
1/x-1 + 1/2 = 2/ x^2-1
Click here to see answer by stanbon(57307)

Question 552632: Can you you find the value of s in this problem? 14+6=3x-4
Click here to see answer by jim_thompson5910(28593)

Question 552651: Solve the equation 3(2x-1)=15 with a justification for each step
Click here to see answer by jim_thompson5910(28593)

Question 552661: Homework worksheet (for my 4th grader - but not from the classroom textbook) directions read to "Write each expression as an open sentence."
but then the expressions to be rewritten all look like they are already open sentences to me?
ie. 7+x=21
50-y=35
s x 12 =84
It's been awhile, but I think the directions are wrong?
Thanks for any guidance.
Click here to see answer by fcabanski(874)

Question 552684: the width of a rectangle is 9x and the length is 3x + 11 solve for x then find the perimeter.

Click here to see answer by Earlsdon(6287)

Question 552728: Please help!
How would I solve two step equations like these?
10x + 17 = 4x - 1
Click here to see answer by jim_thompson5910(28593)

Question 552734: Good Afternoon, i just wanted to know how do you get 2/9 of -36 ?
Click here to see answer by jim_thompson5910(28593)

Question 552738: Please Help!
How would I go on solving 5x - 8 = -2x + 6
Click here to see answer by Earlsdon(6287)

Question 552739: 8f+11=-7f-19
Click here to see answer by jim_thompson5910(28593)

Question 552810: How do I set up this problem?
Mr. Fox invested a sum of money at 6%. He invested a second sum, $2000.00 less than this sum, at 5%. He invested third sum, which was $3000.00 less than the first sum, at 3%. His total annual income was $370.00. Find the amount he invested t each rate.
Click here to see answer by mananth(12270)

Question 552838: Factor Completely
81s^2+16-72s
Click here to see answer by jim_thompson5910(28593)

Question 552834: Help four problems solving equations with variables on each side with fractions. Thank you
4/5y - 8 = 2/5y +16
x/0.4=2x +1.2
3/4k + 16 = 2 - 1/8k
1/3b + 8 = 1/2b -4

Click here to see answer by stanbon(57307)

Question 552853: 4d-5=-d
Click here to see answer by jim_thompson5910(28593)

Question 552868: 13x-9=61
Click here to see answer by jim_thompson5910(28593)

Question 552962: (-3) * (-5) * (-2)
Click here to see answer by nicy12(8)

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