Răspuns:
Explicație pas cu pas:
A). 3/4 : 6/5= 3/4 * 5/6 = 15/24 =5/8 (lit. c)
B). 9/8 : 9/4 = 9/8 * 4/9 =4/8 = 1/2 (lit.f )
C). 2 : 8/3 =2/1 * 3/8 = 6/8 = 3/4 (lit. a )
D). 8/2 : 2 = 8/2*1/2 =8/4 =2 (lit. d)
E). 8/21 : 4/7 = 8/21 * 7/4 =2/3 (lit. b)