20=2(f+2)

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Solution for 20=2(f+2) equation: 



20=2(f+2)

We move all terms to the left:

20-(2(f+2))=0



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

2(f+2)

We multiply parentheses

2f+4

Back to the equation:

-(2f+4)



We get rid of parentheses

-2f-4+20=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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