12y-4y=2(y+9)

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Solution for 12y-4y=2(y+9) equation: 



12y-4y=2(y+9)

We move all terms to the left:

12y-4y-(2(y+9))=0

We add all the numbers together, and all the variables

8y-(2(y+9))=0



We calculate terms in parentheses: -(2(y+9)), so:

2(y+9)

We multiply parentheses

2y+18

Back to the equation:

-(2y+18)



We get rid of parentheses

8y-2y-18=0

We add all the numbers together, and all the variables

6y-18=0

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

6y=18

y=18/6

y=3

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