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8(d+7)=d=2
We move all terms to the left:
8(d+7)-(d)=0
We add all the numbers together, and all the variables
-1d+8(d+7)=0
We multiply parentheses
-1d+8d+56=0
We add all the numbers together, and all the variables
7d+56=0
We move all terms containing d to the left, all other terms to the right
7d=-56
d=-56/7
d=-8
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