Question

What should be added twice the rational number

Answer 1

Hi...☺

Here is your answer...✌
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Let x is to be added

Now,
According to the question,

$2 \times \frac{ - 7}{3} + x = \frac{3}{7} \\ \\ \frac{ - 14}{ 3} + x = \frac{3}{7} \\ \\ x = \frac{3}{7} + \frac{14}{3} \\ \\ x = \frac{3 \times 3 + 14 \times 7}{21} = \frac{9 + 98}{21} \\ \\ x = \frac{107}{21}$