Question 442356: Explain why it is not necessary to state a subtraction principle: For any real numbers a, b, and c, a = b is equivalent to a – c = b – c.
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! Explain why it is not necessary to state a subtraction principle: For any real numbers a, b, and c, a = b is equivalent to a – c = b – c.
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One addition is defined for all Real Numbers,
subtraction is defined as addition of an
additive inverse.
a-b = a+(-b)
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Cheers,
Stan H.
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