4х+5(3-2х)=5-11х
5(3-2х)=5-11х-4х
5(3-2х)=5-15х
5(3-2х)=5(1-3х)
3-2х=1-3х
-2х+3х=1-3
х=-2
4*(-2)+5(3-2*(-2))=5-11*(-2)
-8+5*7=5+22
27=27
Ответ: -2.
4х+15-10х=5-11х
15-6х=5-11х
15-5=-11х+6х
10=-5х