Question

Calculati:
a) 15×(0.5-1/6+0.6)=
b) [0.5+0,(3)]:[1,1(6)-1/6]​

Answer 1

Răspuns:

Explicație pas cu pas:

a) 15 × (0.5 - 1/6 + 0.6) = 15 × (1/2 - 1/6 + 6/10) = 15 × (1/2 - 1/6 + 3/5)

= 15 × (15/30 - 5/30 + 18/30) = 15 × 28/30 = 28/2 = 14

b) [0.5 + 0,(3)] : [1,1(6) - 1/6]​

0,5 = 5/10 = 1/2

0,(3) = 3/9 = 1/3

1,1(6) = (116 - 11)/90 = 105/90 = 21/18 = 7/6

_________

1/2 + 1/3 = 3/6 + 2/6 = 5/6

7/6 - 1/6 = 6/6 = 1

5/6 : 1 = 5/6