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30=-2-4f
We move all terms to the left:
30-(-2-4f)=0
We add all the numbers together, and all the variables
-(-4f-2)+30=0
We get rid of parentheses
4f+2+30=0
We add all the numbers together, and all the variables
4f+32=0
We move all terms containing f to the left, all other terms to the right
4f=-32
f=-32/4
f=-8
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