#include<algorithm>

#include<iostream>

#include<cstdio>

#define ll long long

using namespace std;

struct donser

{

    ll son;

    ll mother;

};

int main()

{

    ll a;

    while(~scanf("%d",&a))

    {

        while(a--)

        {

            ll x,y;

            cin>>x>>y;

            donser m,n;

            m.mother=m.son=;

            n.mother=n.son=;

            while(x--)

                m.mother*=;

            while(y--)

                n.mother*=;

            ll temp=m.mother*n.mother;

            m.son=n.mother;

            n.son=m.mother;

            n.son=n.son+m.son;

            n.mother=temp;

            for(ll i=n.son;i>;i--)

            {

                if(n.mother%i==&&n.son%i==)

                {

                    n.mother/=i;

                    n.son/=i;

                }

            }

            cout<<n.son<<"/"<<n.mother<<endl;

        }

    }

    return ;

}