In triangle ABC DE ll BC with D an AB and E on AC if AD/DB=2/3 find BC/DE
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if DE||BC then
AD/DB=AE/EC=DE/BC
so if AD/DB=2/3
then DE/BC=2/3
and , BC/DE=3/2
AD/DB=AE/EC=DE/BC
so if AD/DB=2/3
then DE/BC=2/3
and , BC/DE=3/2
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