-f-7=4f+8

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Solution for -f-7=4f+8 equation: 



-f-7=4f+8

We move all terms to the left:

-f-7-(4f+8)=0

We add all the numbers together, and all the variables

-1f-(4f+8)-7=0

We get rid of parentheses

-1f-4f-8-7=0

We add all the numbers together, and all the variables

-5f-15=0

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

-5f=15

f=15/-5

f=-3

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