(10/9x3/5-1/6-1/8):(3/4-2/3)X2/9+(2-1/7:4/21)
(10/9x3/5-1/6-1/8):(3/4-2/3)X2/9+(2-1/7:4/21)
3
punti
Livello 0
(10/9x3/5-1/6-1/8):(3/4-2/3)x2/9+(2-1/7:4/21) =
= (2/3-1/6-1/8):(1/12)x2/9+( 2- 3/4) =
= (3/8):(1/12) x 2/9 + (8-3)/4 =
= 9/2 x 2/9 + 5/4 =
= 1 + 5/4 = 9/4
10610
punti
Livello 3