Решите плиз (2x-1)=30 3(y-5)+8=17 5(x+2)=6(2x+7) 5(x+3)=8(10-x) 8(9+2x)=5(2-3x)

Question

Решите плиз (2x-1)=30
3(y-5)+8=17
5(x+2)=6(2x+7)
5(x+3)=8(10-x)
8(9+2x)=5(2-3x)

Answer 1

2х-1=30
2х=31
х=15.5

3у-15+8=17
3у-7=17
3у=24
у=8

5х+10=12х+14
5х-12х=14-10
-7х=4
х=-4/7

5х+15=80-8х
5х+8х=80-15
13х=65
х=5

72+16х=10-15х
16х+15х=10-72
31х=-62
х=-2

Comments

спасибо