Question

12 + 3x - x - 12 = ?

Answer 1

2x

Explanation:

12 + 2x - 12

2x + 12 - 12

12 - 12 = 0

Answer 2

Hi mate here is your answer

12 + 3x - x - 12 = 2x

[By solving 12-12 =0 + 3x-x= 2x

0+2x =2x]