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2.8=f/4
We move all terms to the left:
2.8-(f/4)=0
We add all the numbers together, and all the variables
-(+f/4)+2.8=0
We get rid of parentheses
-f/4+2.8=0
We multiply all the terms by the denominator
-f+(2.8)*4=0
We add all the numbers together, and all the variables
-1f+11.2=0
We move all terms containing f to the left, all other terms to the right
-f=-11.2
f=-11.2/-1
f=11+0.2/1
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