-7=2+f

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Solution for -7=2+f equation: 



-7=2+f

We move all terms to the left:

-7-(2+f)=0

We add all the numbers together, and all the variables

-(f+2)-7=0

We get rid of parentheses

-f-2-7=0

We add all the numbers together, and all the variables

-1f-9=0

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

-f=9

f=9/-1

f=-9

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