Why does this not work?

Question

https://code.sololearn.com/c2y53EVq96IU/?ref=app

Answer 1

Or:

print("{} {}".format(x, y))

if the '+' was just to join x and y

Answer 2

This works:

print("{} + {}".format(x, y))

Answer 3

print("{x} {y}".format.......)

Answer 4

print(int(x) + y)

Answer 5

How can I add them up?

Answer 6

Thanks!