9=y/2-1

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Solution for 9=y/2-1 equation: 



9=y/2-1

We move all terms to the left:

9-(y/2-1)=0

We get rid of parentheses

-y/2+1+9=0

We multiply all the terms by the denominator


-y+1*2+9*2=0

We add all the numbers together, and all the variables

-1y+20=0

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

-y=-20

y=-20/-1

y=+20

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