Question 861333
I used Python, not sure that's allowed but anyways.
{{{y2-y1=-501812727071133223578}}}
{{{x2-x1=-23895844146244439218}}}
{{{(y2-y1)/(x2-x1)=21}}}
{{{y=mx+b}}}
{{{24673218654327873897=21(37142986532477987839)+b}}}
{{{b=-7553929498527709870722}}}
{{{mx-y=-b}}}
{{{highlight(21*x-y=7553929498527709870722)}}}