387,518 views
40 votes
40 votes
-12 + ( ) = 9 whats the missing number

User Jaqx
by
2.6k points

2 Answers

25 votes
25 votes

Answer:

21

Explanation:

let X = ( )

-12 + X = 9

X = 9 + 12

X = 21

User NoAlias
by
2.8k points
12 votes
12 votes

Answer:

The missing number is 21

Explanation:

-12 + x = 9

x = 9 + 12

x = 21

User Halmon
by
3.0k points