Question

1) 4х+5(3-2х)=5-11х
2) 8х+3(7-2х)=4х+3
3) 23-4(3х+8)=1-17х

Answer 1

1) 4х+5(3-2х)=5-11х
4x+15-10x=5-11x
11x+4x-10x=-15+5
5x=-10
x=-10:5
x=-2

2) 8х+3(7-2х)=4х+3
8x+21-6x=4x+3
8x-6x-4x=-21+3
-2x=-18
x=(-18):(-2)
x=9

3) 23-4(3х+8)=1-17х
23-12x-32=1-17x
17x-12x=32-23+1
5x=10
x=10:5
x=2

Answer 2

Я была не права...

Answer 3

Можете с этим помочь?
х(х-1)=42
(х-9)х=36