Question

20
plz tell the answer with solution
​

Answer 1

Answer:

$(\frac{2}{5} - \frac{5}{9} ) \div ( \frac{2}{5} - \frac{1}{4} ) \\ ( \frac{ - 7}{45} ) \div ( \frac{3}{20} ) \\ \frac{ - 7}{45} \times \frac{20}{3} \\ \frac{ - 140}{135} \\ = \frac{ - 28}{27}$

And the reciprocal of -28/27 is

$\frac{ - 27}{28}$

hope it helps