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-13/20d=39
We move all terms to the left:
-13/20d-(39)=0
Domain of the equation: 20d!=0We multiply all the terms by the denominator
d!=0/20
d!=0
d∈R
-39*20d-13=0
Wy multiply elements
-780d-13=0
We move all terms containing d to the left, all other terms to the right
-780d=13
d=13/-780
d=-1/60
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