@@ -0,0 +1,17 @@
+#include<bits/stdc++.h>
+
+using namespace std;
+//B 分数加法,最大公约数的应用
+int main() {
+ int T, a, b, c, d;
+ for (cin >> T; T-- && cin >> a >> b >> c >> d;) {
+ int e = a * d + b * c;
+ int f = b * d;
+ int g = __gcd(e, f);
+ e /= g;
+ f /= g;
+ cout << e << " " << f << endl;
+ }
+ return 0;
+}