Question

2.22. Решите уравнение:
1) |x| - 8 = -5;
4) |8 – 0,2x| = 12;
7) ||x| - 2 = 2;​

Answer 1

1) |x|-8=-5
|x|=-5+8
|x|=3
X= 3 та x =-3
2) 8-0.2x=12
8-0.2x=-12
-0.2x=12-8
-0.2x=-12-8
-0.2x=4
-0.2x=-20
X=-20
X=100
3)|x|=2+2
|x|=4
X=4
X=-4