Question

Add 4by7 2by3 -4by 21
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Answer 1

Answer:

$\bf \frac{22}{21}$

Step-by-step explanation:

$\frac{4}{7} + \frac{2}{3} + ( - \frac{4}{21} )$

L.C.M of 3, 7 and 21 is 21.

$= \frac{4 \times 3 + 2 \times 7 - 4 \times 1}{21} \\ \\ = \frac{12 + 14 - 4}{21} \\ \\ = \frac{26 - 4}{21} \\ \\ \bf = \frac{22}{21}$

Answer 2

Answer:-

$\frac{4}{7} + \frac{2}{3} - \frac{4}{21}$

[LCM =21]

$= \frac{4 \times 3 + 2 \times 7 - 4 \times 1}{21}$

$= \frac{12 + 14 - 4}{21}$

$= \frac{26 - 4}{21}$

$= \frac{22}{21}$

$\boxed{Answer = \frac{22}{21}}$