3y=28+7y

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Solution for 3y=28+7y equation: 



3y=28+7y

We move all terms to the left:

3y-(28+7y)=0

We add all the numbers together, and all the variables

3y-(7y+28)=0

We get rid of parentheses

3y-7y-28=0

We add all the numbers together, and all the variables

-4y-28=0

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

-4y=28

y=28/-4

y=-7

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