Question

Помогите решить уравнения
1. 3х+х+2=18
2. 3х-12=х
3. 4х-2=2х+6
4. 2х-2=6+4

Answer 1

3х+х+2=18
4х=16
х=4

3х-12=х
4х=12
х=3

4х-2=2х+6
2х=8
х=4

2х-2=6+4
2х=12
х=6

Answer 2

3х+х+2=18
4х=16
х=4

3х-12=х
4х=12
х=3

4х-2=2х+6
2х=8
х=4

2х-2=6+4
2х=12
х=6