Question

1)-3,8+1,5-4 --------------- 7-4,92)-0,5*8+1,6*3------------------------ 0,84-1

Answer 1

$\frac{-3.8+1.5-4}{7-4.9} = \frac{-6.3}{2.1} =-3$
$\frac{-0.5*8+1.6*3}{0.84-1} = \frac{0.8}{-0.16} =-5$