Question

 (7-10x)-(8-8x)+(10x+6)=-8
(2x+3)+(3x+4)+(5x+5)=12-7x
решите уравнения

Answer 1

1) (7-10х)-(8-8х)+(10х+6)=-8
7-10х-8+8х+10х+6=-8
-10х+8х+10х=-8-7+8-6
8х=-13
х=-13/8
х=-1.625
2) (2х+3)+(3х+4)+(5х+5)=12-7х
2х+3+3х+4+5х+5=12-7х
2х+3х+5х+7х=12-3-4-5
17х=0
х=0