-31=2(9f-5)

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Solution for -31=2(9f-5) equation: 



-31=2(9f-5)

We move all terms to the left:

-31-(2(9f-5))=0



We calculate terms in parentheses: -(2(9f-5)), so:

2(9f-5)

We multiply parentheses

18f-10

Back to the equation:

-(18f-10)



We get rid of parentheses

-18f+10-31=0

We add all the numbers together, and all the variables

-18f-21=0

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

-18f=21

f=21/-18

f=-1+1/6

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