-y-3=-12

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Solution for -y-3=-12 equation: 


Simplifying
-1y + -3 = -12

Reorder the terms:
-3 + -1y = -12

Solving
-3 + -1y = -12

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 + -1y = -12 + 3

Combine like terms: -3 + 3 = 0
0 + -1y = -12 + 3
-1y = -12 + 3

Combine like terms: -12 + 3 = -9
-1y = -9

Divide each side by '-1'.
y = 9

Simplifying
y = 9

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