8y-9=4(3-y)

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Solution for 8y-9=4(3-y) equation: 



8y-9=4(3-y)

We move all terms to the left:

8y-9-(4(3-y))=0

We add all the numbers together, and all the variables

8y-(4(-1y+3))-9=0



We calculate terms in parentheses: -(4(-1y+3)), so:

4(-1y+3)

We multiply parentheses

-4y+12

Back to the equation:

-(-4y+12)



We get rid of parentheses

8y+4y-12-9=0

We add all the numbers together, and all the variables

12y-21=0

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

12y=21

y=21/12

y=1+3/4

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