Решите уравнения 1.5х-4=4-3(5-2х) 2.4-2(5+4х)=-х+1 3.10-3(1-7х)=-4х-8

Question

Решите уравнения
1.5х-4=4-3(5-2х)
2.4-2(5+4х)=-х+1
3.10-3(1-7х)=-4х-8

Answer 1

5х-4=4-3(5-2х)
5x-4=4-15+6x
5x-6x=4-15+4
-x=-7
x=7

4-2(5+4х)=-х+1
4-10-8x=-x+1
-8x+x=1-4+10
-7x=7
x=-1

10-3(1-7х)=-4х-8
10-3+21x=-4x-8
21x+4x=-8-10+3
25x=-15
x=-3/5
x=-0.6

Answer 2

1.x=7. 2.x=-1. 3.x=-0,6