Odpowiedzi

2010-04-13T15:33:57+02:00
[12 ⅕ - (3 ⅓)²]*(12:1 ⅓)² = [ 61/5 - (10/3)²]*[12:(4/3)]² =
[61/5 - 100/9]*[12*¾]² = [49/45]*9² = 49/45*81 = 49/5*9 = 441/5 = 88 ⅕
2010-04-13T15:38:18+02:00
[12 1/5 - (3 1/3)²]*(12:1 1/3)² = (12 1/5 - 11 1/9) * 9² = (12 9/45 - 11 5/45) * 81 = 1 4/45 * 81 = 441/5 = 88 1/5