Question

решите уравнение:
1)3х+5(-2х-1)= - 26
2)2х+4(-2х+1)= - 20
3)х-3(-х+1)= 31
4)2х-4(-х+1)= 44

Answer 1

1) 3х+5(-2х-1)= -26
3х -10х -5= -26
-7х -5 = -26
-7х= -26+5
-7х= -21
Х= 3
2) 2х+4(-2х+1)= -20
2х-8х+4= -20
-6х +4= -20
-6х= -20-4
-6х= -24
х=4