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7=4.7+f
We move all terms to the left:
7-(4.7+f)=0
We add all the numbers together, and all the variables
-(f+4.7)+7=0
We get rid of parentheses
-f-4.7+7=0
We add all the numbers together, and all the variables
-1f+2.3=0
We move all terms containing f to the left, all other terms to the right
-f=-2.3
f=-2.3/-1
f=2+0.3/1
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