-42=3+5y

Solution for -42=3+5y equation:

Simplifying
-42 = 3 + 5y

Solving
-42 = 3 + 5y

Solving for variable 'y'.

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

Add '-5y' to each side of the equation.
-42 + -5y = 3 + 5y + -5y

Combine like terms: 5y + -5y = 0
-42 + -5y = 3 + 0
-42 + -5y = 3

Add '42' to each side of the equation.
-42 + 42 + -5y = 3 + 42

Combine like terms: -42 + 42 = 0
0 + -5y = 3 + 42
-5y = 3 + 42

Combine like terms: 3 + 42 = 45
-5y = 45

Divide each side by '-5'.
y = -9

Simplifying
y = -9