Question

calcule: 0,4 + (-2/5) × (-3/5) + (-0,5)?

Answer 1

0,4 + (-2/5) × (-3/5) + (-0,5)=
4/10+(-2/4)x(-3/5)+(-5/10)=
4/10+(+6/20)+(-5/10)=
4/10+6/20-5/10=

10,20|2
5, 10|2
5, 5|5
1 , 1 | 2.2.5=20
MMC= 20

8 + 6 - 10
_________=
20

14-10
_____=
20

4/20= simplificando por 4

1/5