y-5=7y-21

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Solution for y-5=7y-21 equation: 



y-5=7y-21

We move all terms to the left:

y-5-(7y-21)=0

We get rid of parentheses

y-7y+21-5=0

We add all the numbers together, and all the variables

-6y+16=0

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

-6y=-16

y=-16/-6

y=2+2/3

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