Question

What rational number should be subtracted from the sum of 3/14 and -4/7 to get 13/21?
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Answer 1

Answer:

3/14 - 4/7 - X = 13/21

X = 3/14 - 4/7 - 13/21

$= \frac{3}{14} - \frac{4}{7} - \frac{13}{21} \\ = \frac{9 - 24 - 26}{42} \\ = \frac{9 - 50}{42} \\ = \frac{ - 41}{42} ans$

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