Question

пж решите 91-94 плиз​

Answer 1

х-3(1-7х)=2х+2
х-3+21х=2х+2
20х=5
х=4
2.-9х-9(4-х)=3х+3
-9х-36+9х=3х+3
-3х=39
х=-13
3.5х-6(5+2х)=х-2
5х-30-12х=х-2
-7х=28
х=-4
4.9х-2(-1-х)=х-5
9х+2+х=х-5
9х=-7
х=-7/9