Answer:
s1 = input("First string?")
s2 = input("Second string?")
s3 = input("Thrid string?")
stringTest = s1 + s2;
if(stringTest == s3):
print(s1 + " + " + s2 + " is equal to " + stringTest)
else:
print(s1 + " + " + s2 + " are not to " + stringTest)
Explanation:
I get user input from s1,s2 and s3. Then, I use stringTest to store s1 and s2. Finally, I see if stringTest is eqqual to the last string. If yes, then tell the user they are equal. If not, then tell the user that they are not equal.