Question

What is the solution set of the following equation? -5x + x + 9 = -4x + 12

Answer 1

-5x + x + 9 = -4x + 12
-4x + 9 = -4x + 12
-4x + 4x = 12 - 9
0 = 3.....incorrect....NO SOLUTION

Answer 2

What is the solution set of the following equation? -5x + x + 9 = -4x + 12 
X=0