7y+2=4y+21

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Solution for 7y+2=4y+21 equation: 



7y+2=4y+21

We move all terms to the left:

7y+2-(4y+21)=0

We get rid of parentheses

7y-4y-21+2=0

We add all the numbers together, and all the variables

3y-19=0

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

3y=19

y=19/3

y=6+1/3

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