Question

|x+3|+|x-5|=20
|x+3|+|x-5|=8
|x+3|+|x-5|=4

Answer 1

1)-х-3-х+5=20
-2х+2=20
-2х=20-2
-2х=18
Х=18:(-2)
Х=-9
2)-Х-3-Х+5=8
-2Х=8-5+3
-2Х=6
Х=6:(-2)
Х=-3
3)-Х-3-Х+5=4
-2Х=4+3-5
-2Х=2
Х=2:(-2)
Х=-1