-2f+9=-9+7f

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Solution for -2f+9=-9+7f equation: 



-2f+9=-9+7f

We move all terms to the left:

-2f+9-(-9+7f)=0

We add all the numbers together, and all the variables

-2f-(7f-9)+9=0

We get rid of parentheses

-2f-7f+9+9=0

We add all the numbers together, and all the variables

-9f+18=0

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

-9f=-18

f=-18/-9

f=+2

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