5*(х-7) = 3*(х-4) - 27
5х - 35 = 3х - 12 - 27
5х - 35 = 3х - 39
5х - 35 - 3х + 39 = 0
2х + 4 = 0
2х = -4
х = -2
Ответ: -2
3х + 2*(2х - 3) = 8-7*(х-2)
3х + 4х - 6 = 8 - 7х + 14
7х - 6 = 22 - 7х
7х - 6 - 22 + 7х = 0
14х - 28 = 0
14х = 28
х = 2
Ответ: 2