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d0.1+0.2=72.8
We move all terms to the left:
d0.1+0.2-(72.8)=0
We add all the numbers together, and all the variables
d0.1-72.6=0
We move all terms containing d to the left, all other terms to the right
d0.1=72.6
d=72.6/1
d=72.6
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