Răspuns:
5/3
Explicație pas cu pas:
(9/8×2/3+11/4):21/10 = ( 18/24 + ⁶⁾11/4 ) * 10/21 = (18 + 66)/24 * 10/21 =
84/24⁽⁴ * 10/21 = 21/6 * 10/21 = 10/6⁽² = 5/3
