Question

2|×+6|=30 помогите решить

Answer 1

2(Х+6)=30
2х+12=30
2х=18
Х=9

2(-х-6)=30
-2х-12=30
-2х=42
Х=-21

Answer 2

Х= 3+8, Х= 11

Answer 3

4х-1=11, 4х=12, Х=12/4, Х=6

Answer 4

Х=3