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3 years ago

7

Please help i don't know what I'm doing

2 answers:

gulaghasi [49]3 years ago

8 0

Answer:

11 is the answer

Step-by-step explanation:

prisoha [69]3 years ago

5 0

Answer:

11

Step-by-step explanation:

to find one of the addend

subtract another one of the addend by the sum

eg : 9 + __= 20

20 - 9 = 11

now we can check

9 + 11 = 20

hope this helps

thanks bye

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