Fill in the blanks to declare two variables and print their sum to the screen

Question

Hi, I need help with this code:
_ b=12
var sum = a_b
print(_)

Answer 1

Can you please help?

Answer 2

set some meaningful tags which tells us about langauge

Answer 3

Mueez Peleowo how can we help you ? If you really can't understand what to fill in those spaces then either revise the lesson again or consider again on the thought "Is coding and programming really for me?"

Answer 4

Its swift 4