9=-3/7y

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Solution for 9=-3/7y equation: 



9=-3/7y

We move all terms to the left:

9-(-3/7y)=0



Domain of the equation: 7y)!=0

y!=0/1

y!=0

y∈R



We get rid of parentheses

3/7y+9=0

We multiply all the terms by the denominator


9*7y+3=0

Wy multiply elements

63y+3=0

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

63y=-3

y=-3/63

y=-1/21

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