18=4(7-y)

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Solution for 18=4(7-y) equation: 



18=4(7-y)

We move all terms to the left:

18-(4(7-y))=0

We add all the numbers together, and all the variables

-(4(-1y+7))+18=0



We calculate terms in parentheses: -(4(-1y+7)), so:

4(-1y+7)

We multiply parentheses

-4y+28

Back to the equation:

-(-4y+28)



We get rid of parentheses

4y-28+18=0

We add all the numbers together, and all the variables

4y-10=0

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

4y=10

y=10/4

y=2+1/2

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