f(-5)=2(-5)+7

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Solution for f(-5)=2(-5)+7 equation: 



f(-5)=2(-5)+7

We move all terms to the left:

f(-5)-(2(-5)+7)=0

We add all the numbers together, and all the variables

f(-5)+3=0

We multiply parentheses

-5f+3=0

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

-5f=-3

f=-3/-5

f=3/5

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