Question

-3(1,2x-2)-(4-4,6x)+6(0,2x-1)
Если х - -15/22
/-дробная черта

Answer 1

-3(1,2x-2)-(4-4,6x)+6(0,2x-1)=

=-3,6х+6-4+4,6х+1,2х-6=

=2,2х-4

х=15/22

2,2х-4= 2 1/5*15/22-4=11/5*15/22-4=

=15/10-4=15/10-2 20/10=-2 5/10=-2 1/2