y-12=-2y-9

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Solution for y-12=-2y-9 equation:


Simplifying
y + -12 = -2y + -9

Reorder the terms:
-12 + y = -2y + -9

Reorder the terms:
-12 + y = -9 + -2y

Solving
-12 + y = -9 + -2y

Solving for variable 'y'.

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

Add '2y' to each side of the equation.
-12 + y + 2y = -9 + -2y + 2y

Combine like terms: y + 2y = 3y
-12 + 3y = -9 + -2y + 2y

Combine like terms: -2y + 2y = 0
-12 + 3y = -9 + 0
-12 + 3y = -9

Add '12' to each side of the equation.
-12 + 12 + 3y = -9 + 12

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

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

Divide each side by '3'.
y = 1

Simplifying
y = 1

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