84=-12y

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Solution for 84=-12y equation:


Simplifying
84 = -12y

Solving
84 = -12y

Solving for variable 'y'.

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

Add '12y' to each side of the equation.
84 + 12y = -12y + 12y

Combine like terms: -12y + 12y = 0
84 + 12y = 0

Add '-84' to each side of the equation.
84 + -84 + 12y = 0 + -84

Combine like terms: 84 + -84 = 0
0 + 12y = 0 + -84
12y = 0 + -84

Combine like terms: 0 + -84 = -84
12y = -84

Divide each side by '12'.
y = -7

Simplifying
y = -7

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