-9y-9=99

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Solution for -9y-9=99 equation: 


Simplifying
-9y + -9 = 99

Reorder the terms:
-9 + -9y = 99

Solving
-9 + -9y = 99

Solving for variable 'y'.

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

Add '9' to each side of the equation.
-9 + 9 + -9y = 99 + 9

Combine like terms: -9 + 9 = 0
0 + -9y = 99 + 9
-9y = 99 + 9

Combine like terms: 99 + 9 = 108
-9y = 108

Divide each side by '-9'.
y = -12

Simplifying
y = -12

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