(3y+9)=12

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Solution for (3y+9)=12 equation: 



(3y+9)=12

We move all terms to the left:

(3y+9)-(12)=0

We get rid of parentheses

3y+9-12=0

We add all the numbers together, and all the variables

3y-3=0

We move all terms containing y to the left, all other terms to the right

3y=3

y=3/3

y=1

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