#include<stdio.h> int A,B,C; int gcd(int a,int b) { return b==0?a:gcd(b,a%b); } int solve(){ if(C>=A+B) { printf("1/1\n"); return; } if(B>A) swap(A,B); int num,den=2*A*B,g; num = (C<=B)? C*C:((C<=A) ? B*(2*C-B) : 2*A*B-(A+B-C)*(A+B-C)); g=gcd(num,den); printf("%d/%d\n",num/g,den/g); } int main(){ int T; scanf("%d",&T); while(T--){ scanf("%d%d%d",&A,&B,&C); solve(); } return 0; }