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3.4=d/6
We move all terms to the left:
3.4-(d/6)=0
We add all the numbers together, and all the variables
-(+d/6)+3.4=0
We get rid of parentheses
-d/6+3.4=0
We multiply all the terms by the denominator
-d+(3.4)*6=0
We add all the numbers together, and all the variables
-1d+20.4=0
We move all terms containing d to the left, all other terms to the right
-d=-20.4
d=-20.4/-1
d=20+0.4/1
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