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The "distributive law": For any numbers, a, b, and c, a(b+ c)= ab+ ac.Since "0" is the additive identity, x+ 0= x.Taking c=0, ab= a(b+ 0)= ab+ a(0)Subtracting ab from both sides 0= a(0).
The "distributive law": For any numbers, a, b, and c, a(b+ c)= ab+ ac.
Since "0" is the additive identity, x+ 0= x.
Taking c=0, ab= a(b+ 0)= ab+ a(0)
Subtracting ab from both sides 0= a(0).
