-42=-4y

Solution for -42=-4y equation:

Simplifying
-42 = -4y

Solving
-42 = -4y

Solving for variable 'y'.

Move all terms containing y to the left, all other terms to the right.

Add '4y' to each side of the equation.
-42 + 4y = -4y + 4y

Combine like terms: -4y + 4y = 0
-42 + 4y = 0

Add '42' to each side of the equation.
-42 + 42 + 4y = 0 + 42

Combine like terms: -42 + 42 = 0
0 + 4y = 0 + 42
4y = 0 + 42

Combine like terms: 0 + 42 = 42
4y = 42

Divide each side by '4'.
y = 10.5

Simplifying
y = 10.5