Question 1080294

{{{10d+5(3d-7)=315}}}
{{{2d+3d-7=63}}}
{{{5d=63+7=70}}}
{{{highlight(d=14)}}}DIMES


{{{n=3d-7}}}
{{{n=3*14-7}}}
{{{highlight(n=35)}}}NICKELS



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14*0.1+35*0.05=1.4+1.75=3.15