السؤال 43

What is the value of -17 + 17?

0, because the two moves cancel exactlyالإجابة الصحيحة
34, adding the two magnitudes
-34, keeping the sign of the leading term
17, the magnitude the two terms share

الشرح

The two addends are opposites, each exactly the amount that undoes the other, so nothing is left once they are combined. A total of 34 adds the two sizes and overlooks that one addend reverses the other rather than joining it.

الشرح

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