7=-(f+-4)

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Solution for 7=-(f+-4) equation: 



7=-(f+-4)

We move all terms to the left:

7-(-(f+-4))=0

We add all the numbers together, and all the variables

-(-(f-4))+7=0



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

-(f-4)

We get rid of parentheses

-f+4

We add all the numbers together, and all the variables

-1f+4

Back to the equation:

-(-1f+4)



We get rid of parentheses

1f-4+7=0

We add all the numbers together, and all the variables

f+3=0

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

f=-3

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