Question

Calculeaza:

1-0,5*[5-0,8*(4,3*5-3,9*4)]

Dau coroana

Answer 1

4,3*5=21,5
3,9*4=15,6
21,5-15,6=5,9
0,8*5,9=4,72
5-4,72=0,28
0,5*0,28=0,14
1-0,14=0,86

Answer 2

1-0,5×[5-0,8×(4,3×5-3,9×4)]=

1-0,5×[5-0,8×(21,5-15,6)]=

1-0,5×(5-0,8×5,9)=

1-0,5×(5-4,72)=

1-0,5×0,28=

1-0,14=

0,86