Question

me ajuda porfavor eu presiso - Resolva as seguintes expressões, simplificando quando possível: o sinal de / é fração, o de x é multiplicação e o : divisão
a) (2/7 + 6) : (8/6 - 9/12) =

b) (3/8 + 4 x 1/2) : (3 x 2/3 + 1/4) =

c) (3 x 1/6 - 9/4) : (1 x 1/2 + 3 - 1/4) =

d) (3/4 + 1/3 x 2/5) : (4/3 x 5/2 - 3/4) =

e) (1 x 2/3 x 12/5 + 3/8) : (3/8 + 1/3 : 4/3)=

Answer 1

a) (2/7 + 6) ÷ (8/6 - 9/12)
(2/7 + 42/7) ÷ (16/12 - 9/12)
44/7 ÷ 7/12
528/49

b) (3/8 + 4 . 1/2) ÷ (3 . 2/3 + 1/4)
(3/8 + 4/2) ÷ (6/3 + 1/4)
(3/8 + 16/8) ÷ (24/12 + 3/12)
19/8 ÷ 27/12
228/216 (÷3)
76/72 (÷2)
38/32 (÷2)
19/16

c) (3 . 1/6 - 9/4) ÷ (1 . 1/2 + 3 - 1/4)
(3/6 - 9/4) ÷ (1/2 + 3 - 1/4)
(12/24 - 27/24) ÷ (2/4 + 12/4 - 1/4)
-15/24 ÷ 13/4
-60/312 (÷3)
-20/106 (÷2)
-10/53

d) (3/4 + 1/3 . 2/5) ÷ (4/3 . 5/2 - 3/4)
(3/4 + 2/15) ÷ (20/6 - 3/4)
(45/60 + 8/60) ÷ (80/24 - 18/24)
53/60 ÷ 62/24
1272/3720 (÷3)
424/1240 (÷2)
212/620 (÷2)
106/310 (÷2)
53/155

e) (1 . 2/3 . 12/5 + 3/8) ÷ (3/8 + 1/3 ÷ 4/3)
(24/15 + 3/8) ÷ (3/8 + 4/9)
(192/120 + 45/120) ÷ (27/72 + 32/72)
237/120 ÷ 59/72
17064/7080 (÷2)
8532/3540 (÷2)
4266/1770 (÷2)
2133/880