What is the solution set for 8x-9=11x+12

asked Jun 8, 2016 4.5k views

3 votes

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6 votes

8x - 9 = 11x + 12
-8x -8x
-9 = 3x + 12
-12 -12
-21 = 3x
3 3
-7 = x

Lifes answered Jun 11, 2016

by Lifes

8.3k points

2 votes

8x-9=11x+12
8x-11x-9=12
-3x-9=12
-3x=12+9
-3x=21
x=21/-3
x=-7

Yousername answered Jun 15, 2016

7.7k points

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