8-7f=-8-9f

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Solution for 8-7f=-8-9f equation: 



8-7f=-8-9f

We move all terms to the left:

8-7f-(-8-9f)=0

We add all the numbers together, and all the variables

-7f-(-9f-8)+8=0

We get rid of parentheses

-7f+9f+8+8=0

We add all the numbers together, and all the variables

2f+16=0

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

2f=-16

f=-16/2

f=-8

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