y+7+2y=3y-14+21

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Solution for y+7+2y=3y-14+21 equation: 



y+7+2y=3y-14+21

We move all terms to the left:

y+7+2y-(3y-14+21)=0

We add all the numbers together, and all the variables

y+2y-(3y+7)+7=0

We add all the numbers together, and all the variables

3y-(3y+7)+7=0

We get rid of parentheses

3y-3y-7+7=0

We add all the numbers together, and all the variables

=0

y=0/1

y=0

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