Question

What must be subtracted from -7 to obtain -The value of (-42) - (-6) is15?

Answer 1

Answer:

answer is 21

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Answer 2

Answer:

-51

Step-by-step explanation:

 [ (-42) - ( -6)] - X  = 15

   multiply symbol inside - x - = +

  [-42 + 6] - X = 15

     -36 -X =15

      X = -15-36

      X = -51