-7f=18-9f

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Solution for -7f=18-9f equation: 



-7f=18-9f

We move all terms to the left:

-7f-(18-9f)=0

We add all the numbers together, and all the variables

-7f-(-9f+18)=0

We get rid of parentheses

-7f+9f-18=0

We add all the numbers together, and all the variables

2f-18=0

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

2f=18

f=18/2

f=9

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