Răspuns:
Explicație pas cu pas:
a)
(2 + 1/3) : 7 = (6/3 + 1/3) : 7 = 7/3 : 7 = 7/3 x 1/7 = 1/3
b)
11 : (4 - 1/3) = 11 : (12/3 - 1/3) = 11 : 11/3 = 11 x 3/11 = 3
c)
(5 + 1/5) : 13/5 = (25/5 + 1/5) : 13/5 = 26/5 : 13/5 = 26/5 x 5/13 = 2
d)
(2 - 1/4) : (1 - 1/2) = (8/4 - 1/4) : (2/2 - 1/2) = 7/4 : 1/2 = 7/4 x 2/1 = 7/2
