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Divide:

-21abc2 by -7abc

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\(\frac{-21abc^2}{-7abc}\) = \((\frac{-21}{-7}a^{1-1}b^{1-1}c^{2-1})\) = 3a0b0c = 3c [Using an÷am = an-m] and [a0 = 1]

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