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)+17=0

We multiply parentheses

-5f+17=0

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

-5f=-17

f=-17/-5

f=3+2/5

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