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Mumz [18]
2 years ago
12

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​
Mathematics
1 answer:
mafiozo [28]2 years ago
6 0

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

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Step-by-step explanation:

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Step-by-step explanation:

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