a. 2/3+2= b. 5/6+3/4= c. 3/10-12/3= d. 4 2/11-2 1/2= e. 0, 75+0, 84+1, 24= f. 9, 13-2, 04-1, 49=

a.2/3 + 2 = 2/3 + 6/3 = 8/3 = 2 2/3
b.5/6 + 3/4 = 10/12 + 9/12 = 19/12 = 1 7/12
c.3/10 - 12/3 = 9/30 - 120/30 = -111/30 = 3 7/10
d.46/11 - 5/2 = 92/22 - 55/22 = 37/22 = 1 15/22
e. 0,75 + 0,84 + 1,24 = 2,83
f. 9,13 - 2,04 - 1,49 = 5,6