Question

transforme as frações mistas em frações impróprias.
por favor​

Answer 1

a)

$2\frac{1}{3} = \frac{2.3 + 1}{3} = \frac{7}{3}$

b)

$1\frac{1}{3} = \frac{1.3 + 1}{3} = \frac{4}{3}$

c)

$1 \frac{2}{7} = \frac{1.2 + 7}{7} = \frac{9}{7}$

d)

$2 \frac{3}{5} = \frac{2.5 + 3}{5} = \frac{13}{5}$

Answer 2

Resposta:

Explicação passo-a-passo:

1)

A)

= 2  1/3

= (3.2+1)/3

= 7/3

R.: 7/3

B)

1  1/3

= (3.1+1)/3

= (3+1)/3

= 4/3

R.: 4/3

C)

1  2/7

= 4  2/7

= (7.4+2)/7

= (28+2)/7

= 30/7

R: 30/7

D)

= 2  3/5

= (5.2+3)/5

= (10+3)/5

= 13/5

R.: 13/5

E)

= 4  2/7

= (7.4+2)/7

= 30/7

R.: 30/7

F)

= 3  5/11

= (11.3+5)/11

= (33+5)/11

= 38/11

R.: 38/11

2)

A)

84/72 : 12/12 = 7/6

R.: 7/6

84,72: 2 (*)

42,36: 2 (*)

21, 18: 2

21, 9: 3 (*)

7,3: 3

7,1: 7

1,1

Mdc = 2.2.3= 12

B)

54/90 : 18/18 = 3/5

R.: 3/5

54,90: 2 (*)

27,45: 3 (*)

9,15: 3 (*)

3,5: 3

1,5: 5

1,1

= 2.3.3

= 2.9

= 18

Mdc = 18

C)

98/28 : 14/14 = 7/2

R.: 7/2

98, 28: 2 (*)

49, 14: 2

49, 7: 7 (*)

7, 1: 7

1, 1

= 2.7

= 14

Mdc = 14

D)

147/189 : 21/21 = 7/9

R.:

7/9

147, 189 : 3 (*)

49, 63: 3

49, 21: 3

49, 7: 7 (*)

7, 1: 7

1,1

= 3.7

= 21

E)

63/105 : 21/21 = 3/5

63, 105: 3 (*)

21, 35: 3

7, 35: 7 (*)

1,1

= 3.7

= 21

Mdc = 21

R.: 3/5