Решите уравнения: 8х - 5 = х- 40........ 9+13у = 35+ 26у......6s+ (3s-2)= 14.....8у-(7 у-...

Question

Решите уравнения: 8х - 5 = х- 40........ 9+13у = 35+ 26у......6s+ (3s-2)= 14.....8у-(7 у- 142)=51
.........(6х+1) - (3-2х)= 14....

Answer 1

1)8х-5=х-40
8х-х=-40+5
7х=-35
х=-5

2) 9+13у=35+26у
13у-26у=35-9
-13у=26
у=-2

3)6s+(3s-2)=14
6s+3s-2=14
9s=14+2
9s=16
s=16/9

4) (6х+1)-(3-2х)=14
6х+1-3+2х=14
8х=14-1+3
8х=16
х=2