Question 964992
{{{X+Y+S=180}}}
{{{X=2S}}}
{{{Y=S+36}}}
Substituting,
{{{2S+S+36+S=180}}}
{{{4S=144}}}
{{{S=36}}}
{{{X=2(36)=72}}}
{{{Y=S+36=72}}}
36-72-72