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BartSMP [9]
3 years ago
12

The sum of two rational numbers will always be?

Mathematics
1 answer:
lisabon 2012 [21]3 years ago
4 0
The sum of two rational numbers will always be rational. A rational number is a number that can be expressed in the form a/b with b ≠ 0. So, if we can prove that the sum of two rational numbers has a denominator, we have proven this statement. Since any rational number can be written as a/b, we can write sum of two rational numbers as a/b + c/d. We can make this ad+bc/bd. Since we proved that the sum of two rational numbers has a denominator, we also prove that their sum is rational. 
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Answer:

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