7y-21=14y+12

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Solution for 7y-21=14y+12 equation: 



7y-21=14y+12

We move all terms to the left:

7y-21-(14y+12)=0

We get rid of parentheses

7y-14y-12-21=0

We add all the numbers together, and all the variables

-7y-33=0

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

-7y=33

y=33/-7

y=-4+5/7

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