a^n/b^n = a^n . b^-n.
a^n . a^-n = a^(n + (-n)).
A. 3a^7/a^6 = 3a^7 . a^-6 = 3a^(7 + (-6)) = 3a^(7 - 6) = 3a^1 = 3a.
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a^n/b^n = a^n . b^-n.
a^n . a^-n = a^(n + (-n)).
A. 3a^7/a^6 = 3a^7 . a^-6 = 3a^(7 + (-6)) = 3a^(7 - 6) = 3a^1 = 3a.