-3y-3=21

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Solution for -3y-3=21 equation: 


Simplifying
-3y + -3 = 21

Reorder the terms:
-3 + -3y = 21

Solving
-3 + -3y = 21

Solving for variable 'y'.

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

Add '3' to each side of the equation.
-3 + 3 + -3y = 21 + 3

Combine like terms: -3 + 3 = 0
0 + -3y = 21 + 3
-3y = 21 + 3

Combine like terms: 21 + 3 = 24
-3y = 24

Divide each side by '-3'.
y = -8

Simplifying
y = -8

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