Question

(13/15-9/5) - (3/15-1/15)

Answer 1

(13/15 - 9/5) mcm=15
(13-9×3)/15
(13/15 - 9/5)--> -14/15

(3/15 - 1/15)--> (3-1)/15--> 2/15
(-14/15)-(2/15)--> -16/15

Answer 2

$( \frac{13}{15} - \frac{9}{5} ) - ( \frac{3}{15} - \frac{1}{15}$
($\frac{175 - 65}{75}$ ) - ($\frac{2}{15} )$
$( \frac{110}{75} ) - ( \frac{2}{15} )$
$\frac{22}{15} - \frac{2}{15}$
$\frac{20}{15}$