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Simplifying 4(19)4 - (-19) and 4(7)-4 - (-7) by Adding the Opposite

These paired computations confirm that subtracting a negative integer always produces the same result as adding the corresponding positive number:

  • 4(19)=234 - (-19) = 23 and 4+19=234 + 19 = 23: Both expressions evaluate to 2323, verifying that 4(19)=4+194 - (-19) = 4 + 19.
  • 4(7)=3-4 - (-7) = 3 and 4+7=3-4 + 7 = 3: Both expressions evaluate to 33, verifying that 4(7)=4+7-4 - (-7) = -4 + 7.

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Updated 2026-05-01

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