1. 2(х-3)=7(2+6х) 2. 5(1-х)=2(х-8) 3. 9-5(х+1)=4+х 4. 2(х-2)+3(1-х)=2 5. 2(х+3)=3(3-х)-8...

Question

1. 2(х-3)=7(2+6х)
2. 5(1-х)=2(х-8)
3. 9-5(х+1)=4+х
4. 2(х-2)+3(1-х)=2
5. 2(х+3)=3(3-х)-8

Решите уравнения, пожалуйста.

Answer 1

1. 2х-6=14+42х ; 2х-42х=-40х;14+6=20; 40х=-20; х=- 20/40; х=-1/2
2. 5-5х=2х-16 ; -5х-2х=-16-5; -7х=-21; х=3
3. 9-5х-5=4+х; (9-5)-5х=4+х; -5х-х=4-4; -6х=0; х=0
4.2х-4+3-3х=2; -х=2+4-3; -х=2+1; х=-3
5. 2х+6=9-3х-8; 2х+3х=9-8-6; 5х=-5; х=-1

Answer 2

1 x=-2
2x =3
3x=1
4x=3
5x=-1