(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

Remove parenthesis around (-12 + y)
-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 = -1y
-12 + -1y = 9 + 2y + -2y

Combine like terms: 2y + -2y = 0
-12 + -1y = 9 + 0
-12 + -1y = 9

Add '12' to each side of the equation.
-12 + 12 + -1y = 9 + 12

Combine like terms: -12 + 12 = 0
0 + -1y = 9 + 12
-1y = 9 + 12

Combine like terms: 9 + 12 = 21
-1y = 21

Divide each side by '-1'.
y = -21

Simplifying
y = -21

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