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-2/5d=20
We move all terms to the left:
-2/5d-(20)=0
Domain of the equation: 5d!=0We multiply all the terms by the denominator
d!=0/5
d!=0
d∈R
-20*5d-2=0
Wy multiply elements
-100d-2=0
We move all terms containing d to the left, all other terms to the right
-100d=2
d=2/-100
d=-1/50
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