Question

Решите уравнения
1) -9(х+4)=8х-2
2)х-4(9-х)=3х+2

Answer 1

х-4(9-х)=3х+2
х-36+4х=3х+2
х+4х-3х=2+36
2х=38
х=38 : 2
х=19

-9(х+4)=8х-2
-36-9x=8x-2
-9x-8x=36-2
-17x=34
x=34 : (-17)
x=-2