Question

3 (х+4)=15
6 (2х-3)=42
(3х-4)(2х+6)=0
(3х+4)(6-2х)=0

Answer 1

1)x=1
2)x=5
3)x=(-3) и (4/3)
4)x=(-4/3) и (3)

Answer 2

3 (х+4)=15
3х+12=15
3х=15-12
х=3÷3
х=1

6 (2х-3)=42
12х-18=42
12х=18+42
12х=60
х=5