4=-2(f-4)

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Solution for 4=-2(f-4) equation: 



4=-2(f-4)

We move all terms to the left:

4-(-2(f-4))=0



We calculate terms in parentheses: -(-2(f-4)), so:

-2(f-4)

We multiply parentheses

-2f+8

Back to the equation:

-(-2f+8)



We get rid of parentheses

2f-8+4=0

We add all the numbers together, and all the variables

2f-4=0

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

2f=4

f=4/2

f=2

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