Question

3/7+8/21 please give with the formula​

Answer 1

Answer:

3/7+8/21

LCM of 7 and 21 is 21

so,3*3+8/21

9+8/21

17/21 is the answer.

Answer 2

Answer:

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Step-by-step explanation:

$\frac{3}{7} + \frac{8}{21} \\ \\taking \: \: lcm \\ \\ \frac{3 \times 3}{7 \times 3} + \frac{8}{21} \\ \\ \frac{9}{21} + \frac{8}{21} \\ \\ \frac{9 + 8}{21} \\ \\ \frac{17}{21}$