Question

Решите уравнения :

1) -у=-8

2)-7х=-56

3) 11у-9=8у-30

Answer 1

1)-y=-8
y=8

2)-7x=-56
x=-56/-7
x=8

3)3y=-21
y=-7

Answer 2

1)

-у=-8
y = 8

2)

-7х=-56
x = -56:(-7)
x = 8

3)

11y-9=8y-30
11y-8y=-30+9
3y=-21
y=-21:3
y=-7