Question

Please help i don't know what I'm doing ​

Answer 1

11

Step-by-step explanation:

to find one of the addend

subtract another one of the addend by the sum

eg : 9 + __= 20

20 - 9 = 11

now we can check

9 + 11 = 20

hope this helps

thanks bye

Answer 2

11 is the answer

Explanation: