Question

1- 1supra2 :0,5 Urgentttttt

Answer 1

1-1/2:5/10=1-1/2:1/2
=1-1/2•2/1=1-1=0

Answer 2

$1- \frac{1}{2}:0,5$
$=1- 0,5}:0,5$
$=1-1$
$= 0$