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0.4=64/16d
We move all terms to the left:
0.4-(64/16d)=0
Domain of the equation: 16d)!=0We add all the numbers together, and all the variables
d!=0/1
d!=0
d∈R
-(+64/16d)+0.4=0
We get rid of parentheses
-64/16d+0.4=0
We multiply all the terms by the denominator
(0.4)*16d-64=0
We multiply parentheses
6.4d-64=0
We move all terms containing d to the left, all other terms to the right
6.4d=64
d=64/6.4
d=10
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