Răspuns:
Explicație pas cu pas:
c) (5/8 + 3/8 + 1/8) + (7/18 + 11/18) =
= (5+3+1)/8 + (7+11)/18 = 9/8 + 18/18 =
= 9/8 + ⁸⁾1 = (9+8)/8 = 17/8
d) (8/14 + 5/14 + 1/14) + (1/3 + 2/3) =
= (8+5+1)/14 + (1+2)/3 = 14/14 + 3/3 = 1+1 = 2
