Question

calculeaza: 0,1-[2\3-(0,5+0,4)]

Answer 1

0,1 - [2/3 - (0,5 + 0,4) = 1/10 - [2/3 - (5/10 + 4/10)

                                  = 1/10 - (2/3 - 9/10) (amplificam fractia 2/3 cu 10, fractia 9/10 cu 3 si fractia 1/10 cu 3)

                                  = 3/30 - (20/30 - 27/30)

                                  =3/30 - (-7/30)

                                  = 3/30 + 7/30 = 10/30 = 1/3

Answer 2

0,1-[2/3-(0,5+0,4)]=0,1-(2/3-9/10)]=1/10-11/30=3/30-11/30= -8/30=-4/15