7y=21,y

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Solution for 7y=21,y equation: 



7y=21.y

We move all terms to the left:

7y-(21.y)=0

We add all the numbers together, and all the variables

7y-(+21.y)=0

We get rid of parentheses

7y-21.y=0

We add all the numbers together, and all the variables

-14y=0

y=0/-14

y=0

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