8y+3y=9+12y

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Solution for 8y+3y=9+12y equation: 


Simplifying
8y + 3y = 9 + 12y

Combine like terms: 8y + 3y = 11y
11y = 9 + 12y

Solving
11y = 9 + 12y

Solving for variable 'y'.

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

Add '-12y' to each side of the equation.
11y + -12y = 9 + 12y + -12y

Combine like terms: 11y + -12y = -1y
-1y = 9 + 12y + -12y

Combine like terms: 12y + -12y = 0
-1y = 9 + 0
-1y = 9

Divide each side by '-1'.
y = -9

Simplifying
y = -9

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