Respostas

2013-08-02T19:45:12-03:00
A) 1/5-6/8+81/9:27/15
8/40-30/40+81/9:27/15
-22/40+81/9:27/15
-22/40+81/9.15/27
(-22:10/40:10)+(1215:81/243:81)
(-2.3/4.3)+(15.4/3.4)
-6/12+60/12
54/12

B)3/2:6/8+4/12-9/2
3/2.8/6+4/12-9/2
24/12+4/12-9/2
2/12-(9.6/2.6)
2/12-54/12
-52/12

C)-5/4:1/2-{-2/4}
-5/4:(1.2/2.2+2/4)
-5/4:2/4+2/4
-5/4:4/4
-1/4

D)2/3-5/4+27/18:9/2
(2.4/3.4)-(5.3/4.3)+27/18:9/2
8/12-15/12+27/18:9/2
-7/12+27/18.2/9
-7/12+54/162
(-7.6/12.6)+(6.4/18.4)
-42/72+24/72
-18/72

E)1/7:5/14+2/10-7/2
1/7.14/5+2/10-7/2
(14:7/35:7)+2/10-7/2
2/5+2/10-7/2
(2.2/5.2)+2/10-7/2
4/10+2/10-7/2
6/10/-(7.5/2.5)
6/10-35/10
6/41

F)8/10+3/6
(8:2/10:2)+(3:3/6:3)
(4.2/5.2)+(1.5/2.5)
8/10+5/10
13/10

G)2/6-3/10+17/34:10/4
(2.5/6.5)-(3.3/10.3)+17/34:10/4
10/30-9/30+17/34:10/4
1/30+17/34:(10:2/4:2)
1/30+17/34:5/2
1/30+17/34.2/5
(1.17/30.17)+(34.3/170.3)
17/510+102/510
119/510

H)1/2:3/4+2/6-3/4
4/6+2/6-3/4
6/6-3/4
24/24-18/24
6/24
I)2/14-1/2.10/4
(2.4/14.4)-(10.7/8.7)
8/56-70/56
-62/56