Решите уравнение 1) 3(4 -х)+1=2(3-х)+ 6 2) (5-3x) - (7 - 2x)= -3 - 2x 3) 2x - 19 = 8 - x 4) 11-6x = 31 -10x

1) 3(4-х)+1=2(3-х)+ 6

12-3х+1=6-2х+6

-3х+2х=6+6-1-12

-х=-1

2) (5-3х)-(7-2х)=3-2х

5-3х-7+2х=3-2х

-3х+2х+2х=3+7-5

х=5

3) 2х-19=8-х

2х+х=8+19

3х=27|:3

х=9

4) 11-6х=31-10х

-6х+10х=31-11

4х=20|:4

х=5