Question

exercitiul cu (,) calculati va rog

Answer 1

[8-4,7:(5-0,8:2 2/3)-4/5 *1,25]:0,1=
=[8-4,7:(5-0,8:8/3)-1]:0,1=
=[8-4,7:(5-8/10*3/8)-1]:0,1=
=[8-4,7:(5-0,3)-1]:0,1=
=[8-4,7:4,7-1]:0,1=
=[8-1-1]:0,1=
=6:0,1=60

Answer 2

$[8 - 4,7 : (5- 0,8 : 2\frac{2}{3} ) - \frac{4}{5} ori 1,25] : 0,1 = \\ = [8- \frac{47}{10} : ( 5- \frac{4}{5} : \frac{8}{3} ) - \frac{4}{5} ori \frac{5}{4} ] : \frac{1}{10} = \\ = [8 - \frac{47}{10} : ( 5 - \frac{4}{5} ori \frac{3}{8} ) - 1 ] : \frac{1}{10} = \\ = [ 8 - \frac{47}{10} : ( 5 - \frac{3}{10} ) - 1 ] : \frac{1}{10} = \\ = (8 - \frac{47}{10} : \frac{47}{10} - 1 ) : \frac{1}{10} = \\ = (8 - \frac{47}{10} ori \frac{10}{47} - 1 ) : \frac{1}{10} = \\ = 60 .$