jointheirs5 jointheirs5

15-01-2017
Mathematics

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Show that the system of rational expressions is closed under addition, or give an example showing the contrary.

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rockinrazz27 rockinrazz27

15-01-2017

Let p/q, r/s be elements of Q , the set of rational numbers, where q and s are non zero.We need to show that the sum is also a rational number.p/q + r/s = (p*s + q*r ) /(q*s)
Since q and s are non zero, the sum is a rational number.

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