Question 120383
If the "sum of two numbers is 53/24" then we have the first equation {{{x+y=53/24}}}



If the "difference of the same two numbers is 13/24" then we have the second equation {{{x-y=13/24}}}



*[invoke solving_linear_system_by_substitution 1,1,"53/24",1,-1,"13/24"] 



The two numbers are {{{11/8}}} and {{{5/6}}}