# Method to calculate the fixed profit
def CalcFixedProfit(burger, soda, meal):
    burger_rate = meal - soda
    return burger - burger_rate


test_cases = int(raw_input())

result = []

for _ in range(test_cases):
    burger, soda, meal = map(int, raw_input().split())
    result.append(CalcFixedProfit(burger, soda, meal))

for data in result:
    print data