Question 1159612
a, Alex's share
j, Jordan's share
{{{system(a+j=400,5j/7=a-40)}}}


Question asks for the value of a.

{{{j=400-a}}}
-
{{{5(400-a)/7=a-40}}}
{{{5(400-a)=7a-280}}}
{{{2000-5a=7a-280}}}
{{{2280=12a}}}
{{{highlight(a=190)}}}