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Respuestas a la pregunta
Respuesta:
a) 5/6 + 7/9 + 4/3
(45+42)/54 + 4/3
87/54 + 4/3
(261+216)/162
477/162
159/54
a = 53/18
b)5/6 + 7/9 - 1/3
(45+42)/54 - 1/3
87/54 - 1/3
(261 - 54)/162
207/162
69/54
b = 23/18
c) 2/3 + 11/15 - 1/5
(30+33)/45 - 1/5
63/45 - 1/5
(315-45)/225
270/225
90/75
30/25
c = 6/5
d) 8/12 + 2/5 - 1/2 - 1/10
(40+24)/60 - (10+2)/20
64/60 - 12/20
8/15 - 3/5
(40-45)/75
-25/75
d = - 1/3
2. Calcula
a) 2/3 x 15/14
30/42
a = 5/7
b) 4/3 ÷ 7/11
4/3 x 11/7
b = 44/21
c) 6 x 5/4
30/4
c = 15/2
d) 4/3 ÷ 6
4/3 x 1/6
4/18
d = 2/9
3. Calcula:
a) 6/7 x ( 9/4 + 3/8)
6/7 x (72+12)/32
6/7 x 84/32
6/7 x 42/16
6/7 x 21/8
3/1 x 3/4
a = 9/4
b) (8 + 2/5) ÷ (6 - 9/4)
[(40+2)/5] ÷ [(24-9)/4]
42/5 ÷ 15/4
42/5 x 4/15
168/75
b = 56/25
c) 7/9 ÷ 4/3 + 8/12 x 2/5
7/9 x 3/4 + 8/12 x 2/5
21/36 + 16/60
7/12 + 4/15
(105+48)/180
153/180
c = 17/20
d) 8/12 + 2/5 ÷ 6/7
8/12 + 2/5 x 7/6
8/12 + 14/30
2/3 + 7/15
(30+21)/45
51/45
d = 17/15
e) 5/6 + 7/9 x 4/3 - 1/2
(10 - 6)/12 + 28/27
4/12 + 28/27
1/3 + 28/27
(27 + 84)/27
111/27
e = 37/9
f) 5/6 + 7/9(4/3 - 1/2)
5/6 + 7/9[(8-3)/6]
5/6 + 7/9(5/6)
5/6 + 35/54
(270 + 210)/324
480/324
120/81
f = 40/27