Respostas

2013-08-22T15:03:28-03:00
MMC DE 4 E 5 = 20 ; (1/5+1/4)= (4+5)/20 = 9/20
9/20 : 3/2 = 9/20*2/3 = 18/60 = 9/30 = 3/10
11/10 : 3/10
11/10 * 10/3 = 11/3
RESP. 11/3
2013-08-22T21:09:20-03:00
11/10 : (1/5 + 1/4 * 2/3) =
=11/10 : (1/5 + 2/12) =
=11/10 : (12/60 + 10/60) =
=11/10 : (22/60) =
=11/10 * 60/22 = 33/4