1/x - 10 =202x - 10 = 5x-155/ - 5 = 10 + 10/4x

Question

1/x - 10 =20
2x - 10 = 5x-15
5/ - 5 = 10 + 10/4x

Comments

Пожалуйста! Помогите.

Answer 1

1)
1-10х-20х
1+10х
х=10/1;х=10
2)
2х-5х=-15+10
-3х=-5
х=5/3=1 целая 2/3