Question

the sum of 12 and an unknown number is 33.
what is unknown number?

Answer 1

pic not clear

33-12=21

therefore no. is 21

Answer 2

Answer:

21

Step-by-step explanation:

the unknown number =x

the sum of unknown number=33

the sum of 1 side =12

we subtract the sum of unknown number which is 33 by 12.

33-12

=> 21