Question

-4/5 and -7/9 which one is greater

Answer 1

cross multiplication:
-4×9,-7×5
-4×9=-36
-7×5=-35
$- 36 < - 35$
-7/9 is greater

Answer 2

$\sf\underline{Step-by-step \: explanation}$

First we have to make them equal. So,

L.C.M of 5 and 9 = 45

$\dfrac{-4}{5}$ = $\dfrac{-4×9}{9×5}$

= $\dfrac{-36}{45}$

$\dfrac{-7}{9}$ = $\dfrac{-7×5}{9×5}$

= $\dfrac{-35}{45}$

$\dfrac{-36}{45}$<$\dfrac{-35}{45}$

Hence, the bigger one is,

$\dfrac{-7}{9}$