-2[y+12]=y-9

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Solution for -2[y+12]=y-9 equation:


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

Reorder the terms:
-2[12 + y] = y + -9
[12 * -2 + y * -2] = y + -9
[-24 + -2y] = y + -9

Reorder the terms:
-24 + -2y = -9 + y

Solving
-24 + -2y = -9 + y

Solving for variable 'y'.

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

Add '-1y' to each side of the equation.
-24 + -2y + -1y = -9 + y + -1y

Combine like terms: -2y + -1y = -3y
-24 + -3y = -9 + y + -1y

Combine like terms: y + -1y = 0
-24 + -3y = -9 + 0
-24 + -3y = -9

Add '24' to each side of the equation.
-24 + 24 + -3y = -9 + 24

Combine like terms: -24 + 24 = 0
0 + -3y = -9 + 24
-3y = -9 + 24

Combine like terms: -9 + 24 = 15
-3y = 15

Divide each side by '-3'.
y = -5

Simplifying
y = -5

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