import random


def plusExpression(num1,num2):
    """
    return a plus expression str
    """
    n=random.randint(0,1)
    if n==0:
        return str(num1)+ " + "+ str(num2)
    elif n==1:
        return str(num2)+ " + "+ str(num1)
    #return str(num1)+ " + "+ str(num2)