100+7y=(10y+9)

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Solution for 100+7y=(10y+9) equation: 



100+7y=(10y+9)

We move all terms to the left:

100+7y-((10y+9))=0



We calculate terms in parentheses: -((10y+9)), so:

(10y+9)

We get rid of parentheses

10y+9

Back to the equation:

-(10y+9)



We get rid of parentheses

7y-10y-9+100=0

We add all the numbers together, and all the variables

-3y+91=0

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

-3y=-91

y=-91/-3

y=30+1/3

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