F(-18)=5x-3(3x+7)

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Solution for F(-18)=5x-3(3x+7) equation: 



(-18)=5F-3(3F+7)

We move all terms to the left:

(-18)-(5F-3(3F+7))=0

We add all the numbers together, and all the variables

-(5F-3(3F+7))-18=0



We calculate terms in parentheses: -(5F-3(3F+7)), so:

5F-3(3F+7)

We multiply parentheses

5F-9F-21

We add all the numbers together, and all the variables

-4F-21

Back to the equation:

-(-4F-21)



We get rid of parentheses

4F+21-18=0

We add all the numbers together, and all the variables

4F+3=0

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

4F=-3

F=-3/4

F=-3/4

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