3-2(y+12)=y-9

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Solution for 3-2(y+12)=y-9 equation:


Simplifying
3 + -2(y + 12) = y + -9

Reorder the terms:
3 + -2(12 + y) = y + -9
3 + (12 * -2 + y * -2) = y + -9
3 + (-24 + -2y) = y + -9

Combine like terms: 3 + -24 = -21
-21 + -2y = y + -9

Reorder the terms:
-21 + -2y = -9 + y

Solving
-21 + -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.
-21 + -2y + -1y = -9 + y + -1y

Combine like terms: -2y + -1y = -3y
-21 + -3y = -9 + y + -1y

Combine like terms: y + -1y = 0
-21 + -3y = -9 + 0
-21 + -3y = -9

Add '21' to each side of the equation.
-21 + 21 + -3y = -9 + 21

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

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

Divide each side by '-3'.
y = -4

Simplifying
y = -4

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