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Find the sum of -3, 8, and (-7).

  1. 2

  2. 0

  3. -2

  4. -18

The correct answer is: -2

Adding all three numbers gives us -3 + 8 -7 = -2. A and D are incorrect because they don't take into account the negative numbers. B is incorrect because it only adds two of the three numbers. The correct answer is C because it takes into account all three numbers and their signs.