-8y-5y=12-9y

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Solution for -8y-5y=12-9y equation: 


Simplifying
-8y + -5y = 12 + -9y

Combine like terms: -8y + -5y = -13y
-13y = 12 + -9y

Solving
-13y = 12 + -9y

Solving for variable 'y'.

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

Add '9y' to each side of the equation.
-13y + 9y = 12 + -9y + 9y

Combine like terms: -13y + 9y = -4y
-4y = 12 + -9y + 9y

Combine like terms: -9y + 9y = 0
-4y = 12 + 0
-4y = 12

Divide each side by '-4'.
y = -3

Simplifying
y = -3

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