f(-2)=3.5

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Solution for f(-2)=3.5 equation: 



f(-2)=3.5

We move all terms to the left:

f(-2)-(3.5)=0

We add all the numbers together, and all the variables

f(-2)-3.5=0

We multiply parentheses

-2f-3.5=0

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

-2f=3.5

f=3.5/-2

f=-1+1/1.3333333333333

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