-12-y=-9

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Solution for -12-y=-9 equation: 


Simplifying
-12 + -1y = -9

Solving
-12 + -1y = -9

Solving for variable 'y'.

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

Add '12' to each side of the equation.
-12 + 12 + -1y = -9 + 12

Combine like terms: -12 + 12 = 0
0 + -1y = -9 + 12
-1y = -9 + 12

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

Divide each side by '-1'.
y = -3

Simplifying
y = -3

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