Question

$\frac{2}{7} - \frac{1}{21}$
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Answer 1

Step-by-step explanation:

$\frac{2}{7} - \frac{1}{21} \\ \\ = \frac{2 \times 3}{7 \times 3} = \frac{6}{21} \: and \: \frac{1}{21} = \frac{1}{21} \\ \\ = \frac{6}{21} - \frac{1}{21} = \frac{5}{21}$

Hence solved.

Answer 2

Step-by-step explanation:

$\frac{2}{7} - \frac{1}{21}$

\frac{2 \times 3}{7 \times 3}

\frac{6}{21} - \frac{1}{21}

\frac{6 - 1}{21}

\frac{5}{21}