def add(first_term, second_term):
    return first_term + second_term


def subtract(first_term, second_term):
    return first_term - second_term

# def multiplication(first_term, second_term):
#     return first_term * second_term

def add(first_term, second_term):
    return first_term + second_term


def subtract(first_term, second_term):
    return first_term - second_term

# def multiplication(first_term, second_term):
#     return first_term * second_term

# def multiplication(first_term, second_term): #     return first_term * second_term