Question

Помогите пожалуйста
7x+1=x-4
8x+20=2x
4*(x-2)=13-3x

Answer 1

7x+1=x-4
7х-х=-4-1
6х=-5
Х=-5/6

8x+20=2x
8х-2х=-20
6х=-20
Х=-20:6
Х=-3 1/3

4*(x-2)=13-3x
4х-8=13-3х
4х+3х=13+8
7х=21
Х=21:7
Х=3

Answer 2

7х+1=х-4
7х-х=-4-1
6х=-5
х=-5/6


8х+20=2х
8х-2х=-20
6х=-20
х=-10/3 или -3.1/3


4×(х-2)=13-3х
4х-8=13-3х
4х+3х=13+8
7х=21
х=3