-21-21=6y

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Solution for -21-21=6y equation:


Simplifying
-21 + -21 = 6y

Combine like terms: -21 + -21 = -42
-42 = 6y

Solving
-42 = 6y

Solving for variable 'y'.

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

Add '-6y' to each side of the equation.
-42 + -6y = 6y + -6y

Combine like terms: 6y + -6y = 0
-42 + -6y = 0

Add '42' to each side of the equation.
-42 + 42 + -6y = 0 + 42

Combine like terms: -42 + 42 = 0
0 + -6y = 0 + 42
-6y = 0 + 42

Combine like terms: 0 + 42 = 42
-6y = 42

Divide each side by '-6'.
y = -7

Simplifying
y = -7

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