-3f-5f-9=10f+9

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Solution for -3f-5f-9=10f+9 equation: 



-3f-5f-9=10f+9

We move all terms to the left:

-3f-5f-9-(10f+9)=0

We add all the numbers together, and all the variables

-8f-(10f+9)-9=0

We get rid of parentheses

-8f-10f-9-9=0

We add all the numbers together, and all the variables

-18f-18=0

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

-18f=18

f=18/-18

f=-1

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