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Add:\newline18+(9)+(14)+(15)=?18 + (-9) + (-14) + (-15) = ?\newlineChoices:\newline(A)1010\newline(B)88\newline(C)2-2\newline(D)20-20

Full solution

Q. Add:\newline18+(9)+(14)+(15)=?18 + (-9) + (-14) + (-15) = ?\newlineChoices:\newline(A)1010\newline(B)88\newline(C)2-2\newline(D)20-20
  1. Add 1818 and 9-9: Add 1818 and 9-9. \newlineCalculation: 18+(9)=918 + (-9) = 9.
  2. Add to 14-14: Add the result from Step 11 to 14-14.\newlineCalculation: 9+(14)=59 + (-14) = -5.
  3. Add to 15-15: Add the result from Step 22 to 15-15.\newlineCalculation: 5+(15)=20-5 + (-15) = -20.

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