Question

(3/2-2/5) + (5/4-2/3)

Answer 1

mmc de 2 e 5 = 10
10 : 2 = 5x3 = 15
10 : 5 = 2x2 = 4
15-4 /10 = 11/10

mmc de 4 e 3 = 12
12 : 4 = 3x5 =15
12 : 3 = 4x2 = 8
15 - 8 /12 = 7/12

11/10 + 7/12
mmc de 10 e 12 = 60
60 : 10 = 6x11 = 66
60 : 12 = 5x7 = 35
66 - 35 /60 = 31/60

R: 31/60