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

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



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

We move all terms to the left:

4y-12-(-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

4y+2y+18-12=0

We add all the numbers together, and all the variables

6y+6=0

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

6y=-6

y=-6/6

y=-1

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