SOLUTION: I need the step-by-step procedure to use to get the answer for the following expression: 3x + 18 = 2x - 2 I know the answer is -20, but I need the step-by-step procedure to u

Algebra ->  Expressions-with-variables -> SOLUTION: I need the step-by-step procedure to use to get the answer for the following expression: 3x + 18 = 2x - 2 I know the answer is -20, but I need the step-by-step procedure to u      Log On


   



Question 811923: I need the step-by-step procedure to use to get the answer for the following expression:
3x + 18 = 2x - 2
I know the answer is -20, but I need the step-by-step procedure to use to get the answer.
Thank you

Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
You can put this solution on YOUR website!
3x + 18 = 2x - 2
We want to use basic algebra operations to get x on the left by itself and the numerical values on the right
Subtract 18 from both sides and you have
3x + 18 - 18 = -2 - 18
3x = 2x - 20
subtract 2x from both sides
3x - 2x = 2x - 2x - 12
which is
x = -20