Question

What should be added do -15
to get
15?



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Answer 1

Answer:

You should add 30 to get the answer as 15

Answer 2

Answer:

+30 should be added to -15 to get 15. As first we will need 15 to cover up - 15 to get 0 and another 15 to get 15,So 15 + 15 = 30.