#include <bits/stdc++.h>

using namespace std;


int profit(int burgerPrice, int sodaPrice, int comboPrice) {

	return burgerPrice + sodaPrice - comboPrice;

}

int main() {

	int numCases;

	cin >> numCases;

	for (int i = 0; i < numCases; ++i) {
		int burgerPrice, sodaPrice, comboPrice;
		cin >> burgerPrice >> sodaPrice >> comboPrice;
		cout << profit(burgerPrice, sodaPrice, comboPrice) << "\n";
	}

	return 0;
}