Question

faça operaçoes com fraçoes

a) (4/7) . (4/3)=

b) (5/2) : (8/9)=n

c) 2/8 + 3/12 + 1/24=

d) 12/5 - 1/4=

e)10/18 + 2/9

Answer 1

Resposta:

a

16/21

b

5/2: 8/9

5/2 . 9/8

45/16

c

2/8+3/12+ 1/24

m.m.c

8,12,24 : 2

4,6,12 : 2

2,3,6. : 2

1, 3, 3 :3

1, 1, 1

2x2x2x3=24

6/24 + 6/24 + 1/24

13/24

d

12/5 -1/4

m.m.c

5,4 : 2

5, 2:2

5, 1 : 5

1, 1

2x2x5 = 20

48/20 -5/20

43/20

e

10/18 +2/9

m.m.c

18,9 :2

9,9 : 9

1, 1

2x9= 18

10/18 + 4/18

14/18

7/9