382,080 views
30 votes
30 votes
here a subtraction problem that has been solved incorrectly 21-9=11 choose the addition sentence that check this subtraction problem here the choices are 21+9=30 11+9=20 11+21=32 which one is correct​

User Sagin
by
3.0k points

1 Answer

12 votes
12 votes

Answer:

Answer:

11+ 9 = 20

Explanation:

=> 21-9=11

21 - 9 equals to 11 is actually a wrong answer

So in order to find the subtraction problem that will help us truly know whether the equation is wrong

=> 11+ 9 = 20

OR THE SECOND EQUATION IS

=> 21 - 11 = 10

User Rmharrison
by
3.7k points