#include <cstdio>

 #include <cstring>

 #include <algorithm>

 using namespace std;

 int main()

 {

     int t,a,b,c,d;

     scanf("%d",&t);

     while(t--)

     {

         scanf("%d/%d %d/%d",&a,&b,&c,&d);

         int m=__gcd(a,b);

         a/=m;b/=m;

         int x=__gcd(c,d);

         c/=x;d/=x;

         if(__gcd(b,d)==)

         {

             printf("%d\n",a/(__gcd(a,c))*c);

         }

         else

             printf("%d/%d\n",a/(__gcd(a,c))*c,__gcd(b,d));

     }

     return ;

 }