Question 1065120
d dimes
n nickles
q quarters
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{{{system(d=q-2,n=5q)}}}  and  {{{0.1d+0.05n+0.25q=4.6}}}


First two equations same as  {{{system(d=q-2,n=5q)}}}


The money count equation is equivalent to {{{2d+n+5q=92}}}.
Substituting for d and n gives an equation in q only,
{{{highlight_green(2(q-2)+5q+5q=92)}}}
Find q, and use it for evaluating d and n.