#include <iostream>
using namespace std;
#include<cmath>
class number
{
private :int son,mother;
public: number (int son2,int mother2)
{ int a,b,k,i=0;
if(son2>mother2)
{ a=son2;b=mother2;}
else {a=mother2;b=son2;}
for( ; ;i++)
{if(a%b==0) break;
else { k=a;a=b;b=k%b;} }
son=son2/b;mother=mother2/b;
}
void show()
{cout<<"son/mother="<<son<<"/"<<mother<<endl;}
};
void main()
{
number a(90,21),b(6,9),c(49,3);
a.show();
b.show();
c.show();
}