Question

2+1supra 2 -0,5
5•1supra10+3,7-2,3

Answer 1

     
$2 + \frac{1}{2} -0,5 = 2 \;\;deoarece\;\;\; \frac{1}{2} = 0,5$


$5* \frac{1}{10} +3,7-2,3 = \frac{5}{10} +1,4=0,5+1,4=1,9$