f(-5)=8(-5)-2

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Solution for f(-5)=8(-5)-2 equation: 



f(-5)=8(-5)-2

We move all terms to the left:

f(-5)-(8(-5)-2)=0

We add all the numbers together, and all the variables

f(-5)+42=0

We multiply parentheses

-5f+42=0

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

-5f=-42

f=-42/-5

f=8+2/5

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