3y+99=12y+9

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Solution for 3y+99=12y+9 equation:


Simplifying
3y + 99 = 12y + 9

Reorder the terms:
99 + 3y = 12y + 9

Reorder the terms:
99 + 3y = 9 + 12y

Solving
99 + 3y = 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.
99 + 3y + -12y = 9 + 12y + -12y

Combine like terms: 3y + -12y = -9y
99 + -9y = 9 + 12y + -12y

Combine like terms: 12y + -12y = 0
99 + -9y = 9 + 0
99 + -9y = 9

Add '-99' to each side of the equation.
99 + -99 + -9y = 9 + -99

Combine like terms: 99 + -99 = 0
0 + -9y = 9 + -99
-9y = 9 + -99

Combine like terms: 9 + -99 = -90
-9y = -90

Divide each side by '-9'.
y = 10

Simplifying
y = 10

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