2f-(-7)=15

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Solution for 2f-(-7)=15 equation: 



2f-(-7)=15

We move all terms to the left:

2f-(-7)-(15)=0

determiningTheFunctionDomain
2f-15-(-7)=0

We add all the numbers together, and all the variables

2f-8=0

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

2f=8

f=8/2

f=4

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