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

Algebra ->  Algebra  -> Expressions -> Questions on Algebra: Evaluation of expressions, parentheses answered by real tutors!      Log On

 Ad: Algebrator™ solves your algebra problems and provides step-by-step explanations! Ad: Algebra Solved!™: algebra software solves algebra homework problems with step-by-step help!

 Algebra: Evaluation of expressions, parentheses Solvers Lessons Answers archive Quiz In Depth

 Question 145755: Evaluate each expression when x=1, y=3, and z=5. 1. 3y 2.z/5x 3. (2x+3y) 4. xy+z Click here to see answer by nabla(475)

 Question 145750: (2x^3-x^2+3x-1)\(x+2) i am not able to understand the solution. please clarify step by step Click here to see answer by nabla(475)

 Question 146062: (3x-2y)-2(5x-4y) Click here to see answer by jim_thompson5910(28598)

 Question 146064: (-6-b)-5(2b+a) Click here to see answer by jim_thompson5910(28598)

 Question 146367: When the problem states "the sum of," I know it means to add, but what does it mean "the sum of the square of a"? And what are the other names for add, subtract, divide & muiltiply? Is there w website that has this inforrmation? Click here to see answer by Earlsdon(6287)

 Question 141865: How do i get the answer as well as show my work on this question. 3x-4y^2+9 Please help me Click here to see answer by Alan3354(30993)

 Question 147050: I could really use some help with this one. I'm old and have forgotten how to do algebra! 5(x-1)=2x-26 Click here to see answer by 24HoursTutor.com(40)

 Question 146965: Evaluate 7i4-12i squared Click here to see answer by ankor@dixie-net.com(15660)

 Question 147175: simply {4x(3y-16x)}-(3x-2y) Click here to see answer by checkley77(12569)

 Question 147174: simply {4x(3y-16x)}-(3x-2y) Click here to see answer by jim_thompson5910(28598)

 Question 147466: a mechanic earns a salary of \$350 a week plus he gets \$10 for every oil change he carries out. a) write an eqation to represent the total weekly earnings E, when C oil changes are done. Click here to see answer by stanbon(57387)
 Question 147466: a mechanic earns a salary of \$350 a week plus he gets \$10 for every oil change he carries out. a) write an eqation to represent the total weekly earnings E, when C oil changes are done. Click here to see answer by vleith(2825)

 Question 147474: 19-(2x+3)=2(x+3)+x please tell me if i did this right. 19-2x-3=2x+6+x 16-2x=3x+6 10-2x=3x 10=5x x=2 Click here to see answer by vleith(2825)

 Question 147565: 3xy-4x+y x equals -3 and y equals 2 both the 4x and y are squared Click here to see answer by jim_thompson5910(28598)

 Question 147602: Hi, I am attempting to solve an equation with parentheses inside of brackets. The problems are similar to 9[-7-(77-43)] I know to solve the parenthases first so I have and I can chane the signs of the terms by doing the following: 9[-70+(-77+43)] 9[-70+34] 9[-36] -324 This answer seems incorrect but I am unsure where I went wrong. Can you help? Thank you very much. Click here to see answer by jim_thompson5910(28598)
 Question 147602: Hi, I am attempting to solve an equation with parentheses inside of brackets. The problems are similar to 9[-7-(77-43)] I know to solve the parenthases first so I have and I can chane the signs of the terms by doing the following: 9[-70+(-77+43)] 9[-70+34] 9[-36] -324 This answer seems incorrect but I am unsure where I went wrong. Can you help? Thank you very much. Click here to see answer by oscargut(891)

 Question 147855: Evaluate the expression 17-(-x)- -10 when x=3 Click here to see answer by vleith(2825)

 Question 147912: 4/3 x(6/5) Click here to see answer by Alan3354(30993)

 Question 148630: please help have admission test for new job in 2hours. A=B+3(4-C) if B=5 and C=2 Click here to see answer by vleith(2825)

 Question 148749: simplify the complex fraction. reduce to lowest terms. 4ab^5/a+b/6a^2b^4 Please help!! Click here to see answer by jim_thompson5910(28598)

 Question 149149: Evaluate: |11  4|  |1  5| Click here to see answer by mangopeeler07(462)

 Question 149561: 6(t+3) + 8 - 5(t + 2)= can you tell me the steps to figure this out Click here to see answer by Fombitz(13828)

 Question 149590: Simplify the expression 12x+10 over 2 Click here to see answer by jojo14344(1512)
 Question 149590: Simplify the expression 12x+10 over 2 Click here to see answer by jim_thompson5910(28598)

 Question 149955: I am totatly lost with evaluating please help. problem: 26) 2/3 ab, for a = 7 and b = 4 1/5 27) 4 + mn, for m = 7 2/5 and n = 3 1/4 Click here to see answer by jim_thompson5910(28598)

 Question 150242: How do I solve the equation x/3-x-3/7=-1? Click here to see answer by Alan3354(30993)

 Question 150328: 6 + 7(x  1) = 2x + 5(x  6)  4 Click here to see answer by checkley77(12569)

 Question 150319: 4(x  a)  (16b  x) = a  b solve for x Click here to see answer by edjones(7569)

 Question 150558: Im supposed to solve the below expression for X, but I cant figure out what Im doing wrong. I believe your supposed to multiply by the LCD to remove the fraction term. Then when I calculate, Im completely lost. Maybe Im using the wrong LCD. Problem is x+3/6 - x/5 = 9x-5/30 LCD is 30, so I multiplied each term by 30 5(x+3)  6x = 9x  5 5x + 15  6x = 9x  5 -x + 15 = 9x  5 15 = 10x  5 20 = 10x x=10 *Answer in my book is x=2 Problem is: 4/x + 2/x+1 = 5 LCD is x(x+1), so I multiplied each term by x(x+1) 4(x+1) + 2x = 5x(x+1) 4x + 4 + 2x = 5x^2 + 5x 6x + 4 = 5x^2 + 5x 4 = 5x^2 + 5x  6x 4 = 5x^2  x *Answer in my book is x=1 Problem is 24/8x - x/3 = 3-x/6 LCD is 24x, so I multiplied each term by 24x 72  8 = 4x(3-x) 72  8 = 12x  4x^2 64 = 12x  4x^2 *Answer in my book is x=3 or x=6 Problem is 6/4(x-2) + 1/4 = 4/x LCD is 4(x-2), so I multiplied each term by 4(x-2) 6 + x  2 = x(x-2) 4 + x = x^2  2x 4 + x = 0 x = -4 *Answer in my book is x=3 or x=6 Click here to see answer by jim_thompson5910(28598)

 Question 150702: my brother is 8 years older than me .write an expression for the age of my brother . Click here to see answer by jim_thompson5910(28598)

 Question 150792: Write a formula that expresses the relationship described below. P varies jointly as x and y and P = 7 when x = 1 and y = 6. I'm not sure, but I think it would be P = 6/7xy Click here to see answer by mangopeeler07(462)

 Question 150964: 5 plus the product of 5 and 2 Click here to see answer by jim_thompson5910(28598)

 Question 150965: 6 times of the difference of x and 4 Click here to see answer by jim_thompson5910(28598)

 Question 150963: the quotient of 12 and a number of h Click here to see answer by jim_thompson5910(28598)

 Question 150962: Cheryl and her friends buy a pizza for \$15.00 plus a delivery charge of d dollars. If delivery charge is \$2.50. What is the total cost? Click here to see answer by jim_thompson5910(28598)

 Question 151004: Expand and simplify 5-(3-4x) Click here to see answer by mducky2(62)

 Question 151148: what is 3 less than thrice a number? Click here to see answer by galileo(7)

 Question 151269: How do I simplify this Click here to see answer by vleith(2825)