-12+3y-9=

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Solution for -12+3y-9= equation:


Simplifying
-12 + 3y + -9 = 0

Reorder the terms:
-12 + -9 + 3y = 0

Combine like terms: -12 + -9 = -21
-21 + 3y = 0

Solving
-21 + 3y = 0

Solving for variable 'y'.

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

Add '21' to each side of the equation.
-21 + 21 + 3y = 0 + 21

Combine like terms: -21 + 21 = 0
0 + 3y = 0 + 21
3y = 0 + 21

Combine like terms: 0 + 21 = 21
3y = 21

Divide each side by '3'.
y = 7

Simplifying
y = 7

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