Question

plz ans it very necessery​

Answer 1

$\frac{3}{7} -\frac{6}{14} -\frac{8}{21} +\frac{5}{7}$

Getting a common denominator and simplifying terms

= $\frac{3}{7} -\frac{3}{7} -\frac{8}{21} +\frac{15}{21}$

= $\frac{15-8}{21} = \frac{7}{21} =\frac{1}{3}$

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