State the property or definition that justifies each of the following: A. - (a + b)= -a + (- b)?

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State the property or definition that justifies each of the following:

A. - (a + b) = - a + (- b)

B. a - b = a + (- b)

2007-09-26 10:18:23 · 2 answers · asked by Ichabod 1 in Science & Mathematics ➔ Mathematics

Distributive property of multiplication.

Doug

2007-09-26 10:21:12 · answer #1 · answered by doug_donaghue 7 · 0⤊ 0⤋

a. distributive prop.

2007-09-26 10:22:38 · answer #2 · answered by marie 2 · 0⤊ 0⤋