#include <bits/stdc++.h>
using namespace std;
int main() {
ios::sync_with_stdio(false);
cin.tie(NULL);
int t;
cin >> t;
while (t--) {
long long l, a, b;
cin >> l >> a >> b;
long long g = __gcd(l, b);
long long ans = a + ((l - 1 - a) / g) * g;
cout << ans << '\n';
}
return 0;
}
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