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1/2d-30=0
Domain of the equation: 2d!=0We multiply all the terms by the denominator
d!=0/2
d!=0
d∈R
-30*2d+1=0
Wy multiply elements
-60d+1=0
We move all terms containing d to the left, all other terms to the right
-60d=-1
d=-1/-60
d=1/60
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