3(Y+3y)=12

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Solution for 3(Y+3y)=12 equation: 


Simplifying
3(Y + 3y) = 12
(Y * 3 + 3y * 3) = 12
(3Y + 9y) = 12

Solving
3Y + 9y = 12

Solving for variable 'Y'.

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

Add '-9y' to each side of the equation.
3Y + 9y + -9y = 12 + -9y

Combine like terms: 9y + -9y = 0
3Y + 0 = 12 + -9y
3Y = 12 + -9y

Divide each side by '3'.
Y = 4 + -3y

Simplifying
Y = 4 + -3y

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