here a subtraction problem that has been solved incorrectly 21-9=11 choose the addition sentence that check this subtraction pro
blem here the choices are 21+9=30 11+9=20 11+21=32 which one is correct
1 answer:
Answer:
Answer:
11+ 9 = 20
Step-by-step 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
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Hope that helps!
