Question

De maneira semelhante,resolva as expressões.
A) 6/7.1/3+9/4:3/2-5/14
B)4/3+6/5.5/9+1/4:3/8
C)7/2:21/6-7/8+9/10.5/6
D)1/2.16/3-3/4:5/8-7/15
E)12/7:3/14+6/11-18/5.20/9
F)17/3-3/4:1/6+3/10:9/5
ME AJUDEM PFV

Answer 1

a) 120/84 ou 10/7

b) 480/180 ou 8/3

c) 105/120 ou 7/8

d) 1

e) 5670/10395 ou  6/11

f) 2055/360 ou 137/24

Explicação:

A) 6/7 . 1/3 + 9/4 : 3/2 - 5/14  =

6/21 + 9/4 · 2/3 - 5/14 =

6/21 + 18/12 - 5/14 =

24/84 + 126/84 - 30/84 =

120/84

B) 4/3 + 6/5 . 5/9 + 1/4 : 3/8  =

4/3 + 30/45 + 1/4 · 8/3 =

4/3 + 30/45 + 8/12 =

240/180 + 120/180 + 120/180 =

480/180

C) 7/2 : 21/6 - 7/8 + 9/10 . 5/6  =

7/2 · 6/21 - 7/8 + 45/60 =

42/42 - 7/8 + 45/60 =

1 - 7/8 + 45/60 =

120/120 - 105/120 + 90/120 =

105/120

D) 1/2 . 16/3 - 3/4 : 5/8 - 7/15  =

16/6 - 3/4 · 8/5 - 7/15 =

16/6 - 24/20 - 7/15 =

160/60 - 72/60 - 28/60 =

60/60 = 1

E) 12/7 : 3/14 + 6/11 - 18/5 . 20/9  =

12/7 · 14/3 + 6/11 - 360/45 =

168/21 + 6/11 - 360/45 =

83160/10395 + 5670/10395 - 83160/10395 =

5670/10395

F) 17/3 - 3/4 : 1/6 + 3/10 : 9/5 =

17/3 - 3/4 · 1/6 + 3/10 · 5/9 =

17/3 - 3/24 + 15/90 =

2040/360 - 45/360 + 60/360 =

2055/360