m3sally m3sally

18-04-2021
Mathematics

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gayanepoghosyan gayanepoghosyan

18-04-2021

-9-(-12)=-9+12=3
-9-12=-9+(-12)=-21

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okerekechidinma18 okerekechidinma18

18-04-2021

Answer:

- and -. =+ so-9+12=3

Step-by-step explanation:

the minus changes to plus and then we solve

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