Question

a.)  $(\frac{5}{9} + \frac{5}{27}): \frac{5}{9} - \frac{4}{15}$

Answer 1

= [( 5 · 3) /27 + 5 /27 ] : 5 / 9 - 4 /15
= ( 15 /27 + 5 /27 ) · 9 /5 - 4/15
= 20 /27 · 9 /5  - 4/ 15
= 4 /3 - 4 15
= 4 ·5 / 15 - 4 /15
= 20/15 - 4/15
= 16 /15