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6(3-2d)=-42
We move all terms to the left:
6(3-2d)-(-42)=0
We add all the numbers together, and all the variables
6(-2d+3)-(-42)=0
We add all the numbers together, and all the variables
6(-2d+3)+42=0
We multiply parentheses
-12d+18+42=0
We add all the numbers together, and all the variables
-12d+60=0
We move all terms containing d to the left, all other terms to the right
-12d=-60
d=-60/-12
d=+5
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