def add_numbers(x,y):  
    add = x+y
    return add
    
num1 = 67
num2 = 56
print("Addition is: ",add_numbers(num1,num2))


def sub_numbers(a,b):
   sub = a - b
   return sub

num1 = 356
num2 = 90
print("Subtraction is: ", sub_numbers(num1, num2))
