maths

posted by .

I've to solve the following absolute value equation 8|w-7|=72.
I solved the equation and the answers I got were -2 and 16. However the problem is that when I'm checking the equation with the answers it's not coming right.

I.E.
8|16-7|=72
8|9| = 72
8(9)= 72
72 = 72 (which is right)

8|-2-7|=-72
8|-9| = -72
8 (9) = - 72
72 = -72 (its coming wrong)
Thus is the second equation right and am I solving it in the right way?

  • maths -

    Sorry! I got it now! I was solving it the wrong way! silly me! :p:) Sorry to bother you!

  • maths -

    Nice work! Both of your solutions are correct. Thanks for rechecking (and doing) your own work! It makes our job easier.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. DRWLS CAN YOU ANSWER

    How do i solve inequalitites with three variables. I still can't figure it outplease help. x+y=1 y-z=-3 2x+3y+z=1 THE ANSWERS ARE3,-2,1 HOW DID THEY GET THAT ANSWER. This can be solved a number of ways. 1) subsitition 2) determinants …
  2. math

    can anyone help with this? suppose you bought some 32 cents stamps and some 20 cents stamps. you spent $3.92 for 16 stamps. how many of each stamp did you buy?
  3. Algebra

    I have a few questions that I need help with. Solve the radical equation, and check all proposed solutions. 5. x- square root 3x-2=4 I don't understand this problem. Solve and check the equation. 10. (x^2+14x+49)^3/4-20=7 would I have …
  4. Algebra

    I have some problems that I am having trouble with and I have some that need checking please. Thanks! Solve the equation. 4. (x+7/4)=2(x-1/6) Find all the value(s) of x that make thedenominator(s) zero. Then solve the equation. 6. …
  5. Algebra

    please help me with this question and check my answers. Solve the problem. A rectangle with width 2x + 5 inches has an area of 2x4 + 9x3 - 12x2 - 79x - 60 square inches. Write a polynomial that represents its length. ( I don't know …
  6. maths

    I've to solve the following absolute value equation: |x - 3| - 4 = 0. I found one of the answers which is 7 i.e. |x - 3| - 4 = 0 x - 7 = 0 x = 7 However, my textbook also includes -1 as the answer. How did they get this answer?
  7. Algebra 1

    Solve each equation. Rewrite the equation as two cases. 1). The absolute value of x - 2 minus 3 equals 5. A: I know one of the solutions is 10. However, I do not believe there is a second solution. 2). The absolute value of x + 7 increased …
  8. math

    When the problem says "Angel transformed the following equation from 6x+4-×=2 (×+1) to 10=2 (×+1). He then stated that the solution to the equation is ×=4. Is he correct?
  9. math

    When the problem says "Angel transformed the following equation from 6x+4-×=2 (×+1) to 10=2 (×+1). He then stated that the solution to the equation is ×=4. Is he correct?
  10. Just checking Math-Absolute Value

    The equation for "the distance from x to -4 is less than 12" is |x-4|<12?

More Similar Questions