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-d/5-21=62
We move all terms to the left:
-d/5-21-(62)=0
We add all the numbers together, and all the variables
-d/5-83=0
We multiply all the terms by the denominator
-d-83*5=0
We add all the numbers together, and all the variables
-1d-415=0
We move all terms containing d to the left, all other terms to the right
-d=415
d=415/-1
d=-415
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