2y-(-1)=9

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Solution for 2y-(-1)=9 equation: 



2y-(-1)=9

We move all terms to the left:

2y-(-1)-(9)=0

determiningTheFunctionDomain
2y-9-(-1)=0

We add all the numbers together, and all the variables

2y-8=0

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

2y=8

y=8/2

y=4

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