Question

Ex 2 va rog , dau coroana!

Answer 1

Răspuns:

Explicație pas cu pas:

2.

a)

1/8 + 1/8 x 4 = 1/8 + 4/8 = 5/8

b)

1/6 + 1/6 : 1/3 = 1/6 + 1/6 x 3/1 = 1/6 + 3/6 = 4/6 = 2/3

c)

4/9 + 3/10 : 6/10 = 4/9 + 3/10 x 10/6 = 4/9 + 3/6 = 8/18 + 9/18 = 17/18

d)

4/3 x 5/2 + 6 = 10/3 + 6 = 10/3 + 18/3 = 28/3

e)

15/7 x 6/5 - 1/21 : 1/3 = 18/7 - 1/21 x 3/1 = 18/7 - 1/7 = 17/7

f)

5/6 : (1/3 + 1/2 : 1/3) = 5/6 : (1/3 + 1/2 x 3/1) = 5/6 : (1/3 + 3/2)

= 5/6 : (2/6 + 9/6) = 5/6 : 11/6 = 5/6 x 6/11 = 5/11