7y-14=8y-21

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Solution for 7y-14=8y-21 equation: 



7y-14=8y-21

We move all terms to the left:

7y-14-(8y-21)=0

We get rid of parentheses

7y-8y+21-14=0

We add all the numbers together, and all the variables

-1y+7=0

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

-y=-7

y=-7/-1

y=+7

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