Question
Fill in the blank.
-23 - (?) = 15

Answer

-23 - (38) = 15Solution:
Let the required number be x -23 - x = 15 ⇒ -23 = 15 + x ⇒ 15 + x = -23 ⇒ x = -15 - 23 ⇒ x = -38

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