Question

решите пожалуйста уравнение 6(2-5х)=9-7(4х-3)

Answer 1

12 - 30x = 9 - 28x + 21
12 - 30x = 30 - 28x
- 30x + 28x = 30 - 12
- 2x = 18
x = - 9 

Answer 2

6(2-5х)=9-7(4х-3)
12-30х=9-28х+21
-2х=18
х=-9