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f(-3)=1/2-3+2
We move all terms to the left:
f(-3)-(1/2-3+2)=0
We add all the numbers together, and all the variables
f(-3)-(1/2-1)=0
We multiply parentheses
-3f-(1/2-1)=0
We get rid of parentheses
-3f+1-1/2=0
We multiply all the terms by the denominator
-3f*2-1+1*2=0
We add all the numbers together, and all the variables
-3f*2+1=0
Wy multiply elements
-6f+1=0
We move all terms containing f to the left, all other terms to the right
-6f=-1
f=-1/-6
f=1/6
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