Question

решите уравнение 2 ( x - 7 0 = 18, 2 ( x + 5 ) = 30, 4 ( x - 6 ) = 64, 6 ( x + 3 ) = 96

Answer 1

1)2х-140=18
2х=158
х=79
2)2х+10=30
2х=20
х=10
3)4х-24=64
4х=88
х=22
4)6х+18=96
6х=78
х=13