Question 1083158
{{{system(d+q=16,10d+25q=295)}}}


{{{system(d+q=16,2d+5q=59)}}}


Multiply the coin count equation by 2 and use elimination of d.
{{{2d+5q-2d-2q=59-32}}}
{{{3q=27}}}
{{{highlight(q=9)}}}
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{{{highlight(d=7)}}}