7(y-12)=21

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Solution for 7(y-12)=21 equation: 



7(y-12)=21

We move all terms to the left:

7(y-12)-(21)=0

We multiply parentheses

7y-84-21=0

We add all the numbers together, and all the variables

7y-105=0

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

7y=105

y=105/7

y=15

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