9y-1=20-y=

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Solution for 9y-1=20-y= equation: 



9y-1=20-y=

We move all terms to the left:

9y-1-(20-y)=0

We add all the numbers together, and all the variables

9y-(-1y+20)-1=0

We get rid of parentheses

9y+1y-20-1=0

We add all the numbers together, and all the variables

10y-21=0

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

10y=21

y=21/10

y=2+1/10

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