# Questions on Algebra: Expressions involving variables, substitution answered by real tutors!

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 Algebra: Expressions involving variables, substitution Solvers Lessons Answers archive Quiz In Depth

 Question 119904: I would love someone to help me answer this question. I need to write a equivalent expression to the following without parenthesis. -(z+92) Would someone please explain to me how to do this. Thank you so much for any help given. Click here to see answer by bucky(2189)

 Question 119909: I have been asked to factor this and not sure exactly what I am to do. Please show me the way to factor this 6m - 6n - 60 = ? Thanks so much for the help. Click here to see answer by Earlsdon(6287)

 Question 119911: Find all values of x so that y = 0 y=5[x-(7-x)] - 9(x+1) I have followed their minute details and still get it wrong - HELP I've tried: 0=5[x-7+x] - 9(x+1) (distributive property in brackets) 0=5[2x-7] - 9(x+1) (combining likes in the bracket) 0=10x - 35 - 9x -9 0=x -44 ????????? where am I going wrong? Thanks - Nancy Click here to see answer by Earlsdon(6287)

 Question 120021: Please help!! Been out of school 14 yrs... Directions: Solve for the indicated variable. 1. 5x + y = 8;y <--- wanting to say do what?? And this one. Directions: Tell which equation you would use to isolate a variable. Explain your reasoning. 1. 3x - y = 5 2x + y = 0 I just don't get it! Click here to see answer by stanbon(57290)

 Question 120033: find the GCF of the product. (3b+6)(2b-10) i think it is 6. Click here to see answer by jim_thompson5910(28549)

 Question 120195: how do you figure out the problem : 8(w+1)-6=26 wat is w ?? Click here to see answer by jim_thompson5910(28549)
 Question 120195: how do you figure out the problem : 8(w+1)-6=26 wat is w ?? Click here to see answer by checkley71(8403)

 Question 120244: A machine can produce a certain number of pages twice as fast as another machine. Operating together these machines can produce this number of pages in 8 minutes. How long would it take each machine, working alone, to produce this number of pages? Click here to see answer by Edwin McCravy(8906)

 Question 120262: I have three prizes. the value of the second prize is five-sixths the value of the first prize, and the value of the third prize is four-fifths the value of the second prize. I have to express the total value of the three prizes as an algebraic expression Click here to see answer by checkley71(8403)

 Question 120245: One watering system needs about 3 times as long to complete a job as another watering system. When both systems operate at the same time, the job can be completed in 9 minutes. How long does it take each system to do the job alone? Thanks. Eli Click here to see answer by stanbon(57290)

 Question 120278: a web designer is trying to put 4 characters on a page. the space occupied by character 2 takes 5 units more than character 1. character 3 takes 7 units less than character 2. character 4 takes the same amount of space as character 2. i have to find the total space occupied by all the characters in an algebraic expression Click here to see answer by stanbon(57290)

 Question 120274: there are three prizes. the value of the second prize is five-sixths the value of the first prize. the third prize is four-fifths that of the second prize. I have to express the total value of the three prizes as an algebraic expression. Click here to see answer by stanbon(57290)

 Question 119874: THIS IS THE QUESTION FROM MY BOOK: FIND THE LENGTH OF EACH SIDE OF THE POLYGON FOR THE GIVEN PERIMETER. P=84 AND THE SIDES ARE 8X+3, 6X+4, 6X-3. PLEASE HELP ME. Click here to see answer by solver91311(16877)

 Question 120350: i dont kno0w how to sove for substitution elimination or graphing for this problem 2x-y=1 and 3x+y=-6 Click here to see answer by jim_thompson5910(28549)
 Question 120350: i dont kno0w how to sove for substitution elimination or graphing for this problem 2x-y=1 and 3x+y=-6 Click here to see answer by solver91311(16877)

 Question 120369: how do you solve 9x-3y=9 and x+3y=11 using graphing or eliminTION Click here to see answer by jim_thompson5910(28549)

 Question 120370: -3a^2b DIvided by 35a^5 TIMES 14a^3b^2 divided by -9b^4 Click here to see answer by jim_thompson5910(28549)

 Question 120417: How can I solve 3a + 5b = 31 7a + 5b = 59 Using elimination? (or linear combination method) Thanks! Click here to see answer by jim_thompson5910(28549)

 Question 120421: HOW DO YOU DO THIS ONE USING ELIMINATION OR SUBSTITUTION....9X-3Y=9 AND X+3Y=11 Click here to see answer by jim_thompson5910(28549)

 Question 120379: i really need help with this one: Given that, a=b+1 Prove that Thanks in advance. Click here to see answer by scott8148(6628)

 Question 120453: how do you solve using elimination and substitution..i have 29 problems to answer so this helps me umm here is the problem 2x-7y=8 and 3x-4y=-1 Click here to see answer by jim_thompson5910(28549)

 Question 120433: The parabola y=x2-4 intersects the x axis at two points, P and Q. What is the distance from P to Q? Click here to see answer by josmiceli(9669)
 Question 120433: The parabola y=x2-4 intersects the x axis at two points, P and Q. What is the distance from P to Q? Click here to see answer by bucky(2189)

 Question 120483: factor the following by GROUPING. x^3-3x^2+4x-12 Would it be 12-4x-3x^2+x^3? Click here to see answer by MathLover1(6625)

 Question 120642: write in simplest form. x^2-15x+54 / x^2-36 thank you for the help in advance! Click here to see answer by jim_thompson5910(28549)

 Question 120713: (x/2)(2/3)=4 I can not remember what to do here to save my life. How do I work this problem? Click here to see answer by nabla(475)

 Question 120792: FInd the constant term that should be added to make the following expression a perfect square trinomail. x^2+ 20x Thanks Click here to see answer by checkley71(8403)