12-2y=3(y+9)

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


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

Reorder the terms:
12 + -2y = 3(9 + y)
12 + -2y = (9 * 3 + y * 3)
12 + -2y = (27 + 3y)

Solving
12 + -2y = 27 + 3y

Solving for variable 'y'.

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

Add '-3y' to each side of the equation.
12 + -2y + -3y = 27 + 3y + -3y

Combine like terms: -2y + -3y = -5y
12 + -5y = 27 + 3y + -3y

Combine like terms: 3y + -3y = 0
12 + -5y = 27 + 0
12 + -5y = 27

Add '-12' to each side of the equation.
12 + -12 + -5y = 27 + -12

Combine like terms: 12 + -12 = 0
0 + -5y = 27 + -12
-5y = 27 + -12

Combine like terms: 27 + -12 = 15
-5y = 15

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

Simplifying
y = -3

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