86.4=2.9(f+19)+11

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Solution for 86.4=2.9(f+19)+11 equation: 



86.4=2.9(f+19)+11

We move all terms to the left:

86.4-(2.9(f+19)+11)=0



We calculate terms in parentheses: -(2.9(f+19)+11), so:

2.9(f+19)+11

We multiply parentheses

2.9f+55.1+11

We add all the numbers together, and all the variables

2.9f+66.1

Back to the equation:

-(2.9f+66.1)



We get rid of parentheses

-2.9f-66.1+86.4=0

We add all the numbers together, and all the variables

-2.9f+20.3=0

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

-2.9f=-20.3

f=-20.3/-2.9

f=+7

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