Question

is -5 a solution to -9+5w<16

Answer 1

$-9+5w\ \textless \ 16$
$5w\ \textless \ 16+9$
$5w\ \textless \ 25$
$w\ \textless \ 5$

Answer 2

-9 + 5w < 16
-9 + 5(-5) < 16
-9 + (-25) < 16
- 34 < 16

NO, -5 is not a solution to -9+5w<16