Question

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

Answer 1

Answer:

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Step-by-step explanation:

$\frac{3}{14} + ( \frac{ - 4}{7} ) - x = \frac{13}{21} \\ = > \frac{3}{14} - \frac{ 4}{7} - x = \frac{13}{21} \\ = > x = \frac{3}{14} - \frac{ 4}{7} - \frac{13}{21} \\ = > x = \frac{9 - 24 - 26}{42} \\ = > x = \frac{ - 41}{42}$

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