#include<bits/stdc++.h>
using namespace std;
#define pb push_back
#define mp make_pair
#define clr(x) x.clear()
#define sz(x) ((int)(x).size())
#define F first
#define S second
#define REP(i,a,b) for(i=a;i<b;i++)
#define rep(i,b) for(i=0;i<b;i++)
#define rep1(i,b) for(i=1;i<=b;i++)
#define pdn(n) printf("%d\n",n)
#define sl(n) scanf("%lld",&n)
#define sd(n) scanf("%d",&n)
#define pn printf("\n")
typedef pair<int,int> PII;
typedef vector<PII> VPII;
typedef vector<int> VI;
typedef vector<VI> VVI;
typedef long long LL;
#define MOD 1000000007
LL gcd(LL a, LL b)
{
    if(b==0)return a;
    return gcd(b,a%b);
}
int main()
{
    int t;
    cin >> t;
    while(t--)
    {
        LL n,m;
        cin >> n >> m;
        LL p=(n/2)*((m+1)/2) + (m/2)*((n+1)/2);
        LL q=n*m;
        LL gc=gcd(p,q);
        cout << p/gc << "/" << q/gc<<endl;
    }
    return 0;
}