F(x)=5x-21

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Solution for F(x)=5x-21 equation:



(F)=5F-21
We move all terms to the left:
(F)-(5F-21)=0
We get rid of parentheses
F-5F+21=0
We add all the numbers together, and all the variables
-4F+21=0
We move all terms containing F to the left, all other terms to the right
-4F=-21
F=-21/-4
F=5+1/4

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