Question

Va rog ajutati-ma la ex din poza, dau coroana. ​

Answer 1

Răspuns:

Explicație pas cu pas:

a)

(1/2 + 3/4 + 5/6) + (1/2 + 1/4 + 1/6)

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

= (1/2 + 1/2) + (3/4 + 1/4) + (5/6 + 1/6)

= 2/2 + 4/4 + 6/6

= 1 + 1 + 1

= 3

b)

(3/2 + 7/5 + 5/9) + (3/2 + 8/5 + 22/9)

= 3/2 + 7/5 + 5/9 + 3/2 + 8/5 + 22/9

= (3/2 + 3/2) + (7/5 + 8/5) + (5/9 + 22/9)

= 6/2 + 15/5 + 27/9

= 3 + 3 + 3

= 9