Вот, хорошего вечера :)
1. 2х = 16
х = 16 : 2
х = 8
2. 7х + 6 = 60 - 2х
7х + 2х = 60 - 6
9х = 54
х = 54 : 9
х = 6
3. 5 (x+7) - 6 (x-5) = 12
5x + 35 - 6x - 5 = 12
5x - 6x = -35 + 5 + 12
-x = -18
x = 18
4. 3х = 12
х = 12 : 3
х = 4
5. 3х - 6 = х + 2
3х - х = 6 + 2
2х = 8
х = 8 : 2
Вот, хорошего вечера :)
1. 2х = 16
х = 16 : 2
х = 8
2. 7х + 6 = 60 - 2х
7х + 2х = 60 - 6
9х = 54
х = 54 : 9
х = 6
3. 5 (x+7) - 6 (x-5) = 12
5x + 35 - 6x - 5 = 12
5x - 6x = -35 + 5 + 12
-x = -18
x = 18
4. 3х = 12
х = 12 : 3
х = 4
5. 3х - 6 = х + 2
3х - х = 6 + 2
2х = 8
х = 8 : 2
х = 4