Question

Решите пример
15(х+2)-30=12х

Answer 1

15х +30 -30 = 12х
15х -12х =0
3х =0
х = 0

Answer 2

15(х + 2) - 30 = 12х
15 (х + 2) - 12х = 30
15х + 15 *2 - 12х = 30
15х + 30 -12х = 30
15х - 12х = 30 - 30
3х = 0
х = 0 : 3
х =  0