4(y-9)=21

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Solution for 4(y-9)=21 equation: 



4(y-9)=21

We move all terms to the left:

4(y-9)-(21)=0

We multiply parentheses

4y-36-21=0

We add all the numbers together, and all the variables

4y-57=0

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

4y=57

y=57/4

y=14+1/4

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