Question

please solve this it is so important​

Answer 1

Step-by-step explanation:-

$\frac{6}{7} - \frac{2}{3} - \frac{7}{9} + \frac{19}{21}$

LCM=63

$\frac{6 \times 9}{7 \times 9} = \frac{54}{63} \: \: \: \: \: \frac{2 \times 21}{3 \times 21} = \frac{42}{63} \: \: \: \: \: \frac{7 \times 7}{9 \times 7} = \frac{49}{63} \: \: \: \: \: \frac{19 \times 3}{21 \times 3} = \frac{57}{63}$

$\frac{54 - 42 - 49 + 57}{63} = \frac{20}{63}$

Answer:-

$\frac{20}{63}$

Hope you understand

Same the second part have to done

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