Question

what must be subtracted from -7 to obtain -15​

Answer 1

Answer:

8 must be subtracted from -7 to get -15

Answer 2

Answer:

8

Step-by-step explanation:

let the number required be x

(-7) - x = -15

-7-x = -15

- ( 7+x) = -15

7 + x = 15

x = 15 - 7 = 8

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