Question

(3/4) -1 × (4/5) -1    plz answer

Answer 1

$( \frac{3}{4}-1 )( \frac{4}{5}-1 )=( \frac{3-4}{4} )( \frac{4-5}{5})= \frac{(-1)(-1)}{20}= \frac{1}{20}$

Answer 2

$=( \frac{3}{4}-1 )( \frac{4}{5}-1 ) \\ =( \frac{3-4}{4} )( \frac{4-5}{5}) \\ =\frac{(-1)(-1)}{20} \\ = \frac{1}{20}$