7|х|-2|х|=3|х|+12 2х+3х-18=х-7х+15

Question

7|х|-2|х|=3|х|+12
2х+3х-18=х-7х+15

Answer 1

2x+3x-18=x-7x+15
5x+7x=15+18
12x=33
x=33/12
x=2.75

7x-2x-3x=12
2x=12
x=6

Answer 2

7|х|-2|х|=3|х|+12
7|х|-2|х|-3|х|=12
2|х|=12
|х|=12:2
|х|=6
х=6 х=-6

2х+3х-18=х-7х+15
2х+3х-х+7х=15+18
11х=33
х=33:11
х=3