-3y-12=9y+12

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


Simplifying
-3y + -12 = 9y + 12

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

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

Solving
-12 + -3y = 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.
-12 + -3y + -9y = 12 + 9y + -9y

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

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

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

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

Combine like terms: 12 + 12 = 24
-12y = 24

Divide each side by '-12'.
y = -2

Simplifying
y = -2

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