f(-4)=9(-4)-7

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Solution for f(-4)=9(-4)-7 equation: 



f(-4)=9(-4)-7

We move all terms to the left:

f(-4)-(9(-4)-7)=0

We add all the numbers together, and all the variables

f(-4)+43=0

We multiply parentheses

-4f+43=0

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

-4f=-43

f=-43/-4

f=10+3/4

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