Question

Suma a doua numere este 53/6, iar diferenta lor este 26/6.Aflati numerele.

Answer 1

facem sistem 

a+b=$\frac{53}{6}$
a-b=$\frac{26}{6}$

$\left \{ {{6a+6b=53} \atop {6a-6b=26}} \right.$
-------------------------------------------------------(+)
12a   /=79 
a=$\frac{79}{12}$

$\frac{79}{12} -b= \frac{23}{6}$
$b= \frac{79}{12} - \frac{23}{6} = \frac{33}{12} = \frac{11}{4}$