12-4y=2(y+9)

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Solution for 12-4y=2(y+9) equation:


Simplifying
12 + -4y = 2(y + 9)

Reorder the terms:
12 + -4y = 2(9 + y)
12 + -4y = (9 * 2 + y * 2)
12 + -4y = (18 + 2y)

Solving
12 + -4y = 18 + 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 + -4y + -2y = 18 + 2y + -2y

Combine like terms: -4y + -2y = -6y
12 + -6y = 18 + 2y + -2y

Combine like terms: 2y + -2y = 0
12 + -6y = 18 + 0
12 + -6y = 18

Add '-12' to each side of the equation.
12 + -12 + -6y = 18 + -12

Combine like terms: 12 + -12 = 0
0 + -6y = 18 + -12
-6y = 18 + -12

Combine like terms: 18 + -12 = 6
-6y = 6

Divide each side by '-6'.
y = -1

Simplifying
y = -1

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