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-2.61-1.7f=-1.4f
We move all terms to the left:
-2.61-1.7f-(-1.4f)=0
We get rid of parentheses
-1.7f+1.4f-2.61=0
We add all the numbers together, and all the variables
-0.3f-2.61=0
We move all terms containing f to the left, all other terms to the right
-0.3f=2.61
f=2.61/-0.3
f=-8+0.21/0.3
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