F(2.5)=80-15x

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Solution for F(2.5)=80-15x equation: 



(2.5)=80-15F

We move all terms to the left:

(2.5)-(80-15F)=0

We add all the numbers together, and all the variables

-(-15F+80)+(2.5)=0

We add all the numbers together, and all the variables

-(-15F+80)+2.5=0

We get rid of parentheses

15F-80+2.5=0

We add all the numbers together, and all the variables

15F-77.5=0

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

15F=77.5

F=77.5/15

F=5+2.5/15

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