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26.57+d=30.10
We move all terms to the left:
26.57+d-(30.10)=0
We add all the numbers together, and all the variables
d+26.57-(30.1)=0
We add all the numbers together, and all the variables
d-3.53=0
We move all terms containing d to the left, all other terms to the right
d=3.53
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