Question

найдите множество корней уравнения
|7,2| : |x| - |-3,8| = |-4,2|

Answer 1

7,2:|X|-3.8=4.2
7.2:|X|=4.2+3.8
7.2:|X|=8
|X|=7.2:8
|X|=0.9
X=0.9   X=-0.9