-2f-7=8+f

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Solution for -2f-7=8+f equation: 



-2f-7=8+f

We move all terms to the left:

-2f-7-(8+f)=0

We add all the numbers together, and all the variables

-2f-(f+8)-7=0

We get rid of parentheses

-2f-f-8-7=0

We add all the numbers together, and all the variables

-3f-15=0

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

-3f=15

f=15/-3

f=-5

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