1. 3+1/9 / 2+1/3 = 28/9 / 7/3 = 28*3/9*7 = 4/3.
2. 4/3 - 2+5/6 = 8/6 - 2+5/6 = - 9/6 = -1,5 (или -1+1/2).
1. 3+1/9 / 2+1/3 = 28/9 / 7/3 = 28*3/9*7 = 4/3.
2. 4/3 - 2+5/6 = 8/6 - 2+5/6 = - 9/6 = -1,5 (или -1+1/2).