Question 344008
{{{(D-3)/D}}}
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{{{(3(D-3))/(D+7)=3/2}}}
{{{3(D-3)=(3/2)(D+7)}}}
{{{6(D-3)=3(D+7)}}}
{{{6D-18=3D+21}}}
{{{3D=39}}}
{{{D=13}}}
{{{D-3=10}}}
The original fraction was {{{highlight(10/13)}}}.