RebeccaTor3
RebeccaTor3 RebeccaTor3
  • 19-06-2017
  • Mathematics
contestada

An eighth-grade student claims she can prove that subtraction of integers is commutative. She points out that if a and b are integers, then

a - b = a + (-b)

Respuesta :

xxabbyxx1
xxabbyxx1 xxabbyxx1
  • 19-06-2017
That is right. Just like a * b = b * a
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