8-f=-9f

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Solution for 8-f=-9f equation: 



8-f=-9f

We move all terms to the left:

8-f-(-9f)=0

We add all the numbers together, and all the variables

-1f-(-9f)+8=0

We get rid of parentheses

-1f+9f+8=0

We add all the numbers together, and all the variables

8f+8=0

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

8f=-8

f=-8/8

f=-1

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