Question

Решите уравнения
4/5z=-20
1/4x=1/2
-2/7z=-2/7
2x=-1/3
1/8y=4
-6u=2/3

Answer 1

4/5z=-20
Z=-20:(4/5)
Z=-25.


1/4x=1/2
X=(1/4):(1/2)
X=2


-2/7z=-2/7
Z=1

2x=-1/3
X=-1/6