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1.250+d=4.00
We move all terms to the left:
1.250+d-(4.00)=0
We add all the numbers together, and all the variables
d+1.250-4=0
We add all the numbers together, and all the variables
d-2.75=0
We move all terms containing d to the left, all other terms to the right
d=2.75
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