-2f-20=7+7f

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Solution for -2f-20=7+7f equation: 



-2f-20=7+7f

We move all terms to the left:

-2f-20-(7+7f)=0

We add all the numbers together, and all the variables

-2f-(7f+7)-20=0

We get rid of parentheses

-2f-7f-7-20=0

We add all the numbers together, and all the variables

-9f-27=0

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

-9f=27

f=27/-9

f=-3

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