Question 1110796
{{{system(r-6=4(d-6),r+10=2(d+10))}}}

-

{{{6+4(d-6)=2(d+10)-10}}}
{{{4d-24=2d+20-16}}}
{{{4d-2d=24+20-16}}}
{{{2d=28}}}
{{{highlight(d=14)}}}



(may need to recheck)
{{{r=4(d-6)+6}}}
{{{r=4(16-6)+6}}}
{{{highlight(cross(r=46))}}}
--
(retry)
{{{r=4d-24+6}}}
{{{r=4d-18}}}
{{{r=4*14-18}}}
{{{r=56-18}}}
{{{highlight(r=38)}}}