33+3y-12=12y-9-4y

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Solution for 33+3y-12=12y-9-4y equation: 


Simplifying
33 + 3y + -12 = 12y + -9 + -4y

Reorder the terms:
33 + -12 + 3y = 12y + -9 + -4y

Combine like terms: 33 + -12 = 21
21 + 3y = 12y + -9 + -4y

Reorder the terms:
21 + 3y = -9 + 12y + -4y

Combine like terms: 12y + -4y = 8y
21 + 3y = -9 + 8y

Solving
21 + 3y = -9 + 8y

Solving for variable 'y'.

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

Add '-8y' to each side of the equation.
21 + 3y + -8y = -9 + 8y + -8y

Combine like terms: 3y + -8y = -5y
21 + -5y = -9 + 8y + -8y

Combine like terms: 8y + -8y = 0
21 + -5y = -9 + 0
21 + -5y = -9

Add '-21' to each side of the equation.
21 + -21 + -5y = -9 + -21

Combine like terms: 21 + -21 = 0
0 + -5y = -9 + -21
-5y = -9 + -21

Combine like terms: -9 + -21 = -30
-5y = -30

Divide each side by '-5'.
y = 6

Simplifying
y = 6

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