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f(-3)=2/3(-3)-3
We move all terms to the left:
f(-3)-(2/3(-3)-3)=0
We multiply parentheses
-3f-(2/3(-3)-3)=0
We multiply all the terms by the denominator
-3f*3(-3)-3)-(2=0
We add all the numbers together, and all the variables
-3f*3(-3)=0
Wy multiply elements
-9f^2(-=0
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