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-976d+(-12.81d)=8.54
We move all terms to the left:
-976d+(-12.81d)-(8.54)=0
We add all the numbers together, and all the variables
-976d+(-12.81d)-8.54=0
We get rid of parentheses
-976d-12.81d-8.54=0
We add all the numbers together, and all the variables
-988.81d-8.54=0
We move all terms containing d to the left, all other terms to the right
-988.81d=8.54
d=8.54/-988.81
d=-1.8810572687225/217.79955947137
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