Question

Решите:
2(x-2)-1=5(x-2)-7

Answer 1

2x-4-1=5x-10-7
2x-5x=-10-7+4+1
-3x=-12
x=4

Answer 2

2х-4-1=5х-10-7
2х-5=5х-17
2х-5х=-17+5
-3х=-12
х=-12:(-3)
х=4
проверка
2(4-2)-1=5(4-2)-7
2*2-1=5*2-7
3=3