217=31(2y-9)

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Solution for 217=31(2y-9) equation: 



217=31(2y-9)

We move all terms to the left:

217-(31(2y-9))=0



We calculate terms in parentheses: -(31(2y-9)), so:

31(2y-9)

We multiply parentheses

62y-279

Back to the equation:

-(62y-279)



We get rid of parentheses

-62y+279+217=0

We add all the numbers together, and all the variables

-62y+496=0

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

-62y=-496

y=-496/-62

y=+8

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