Question

efetue as operações com as frações ​

Answer 1

Resposta:

a) 7/10; b) 29/12; c) 33/12; d) 19/12; e) 17/15; f) 1/6.

Explicação passo a passo:

a) 3/10 + 2/5 =

Igualando os denominadores:

3/10 + 4/10 =

7/10.

b) 2 + 5/12 =

Igualando os denominadores:

24/12 + 5/12 =

29/12.

c) 1/3 + 5/12 + 10/5 =

Igualando os denominadores:

20/60 + 25/60 + 120/60 =

45/60 + 120/60 =

165/60 = 33/12.

d) 2 - 5/12 =

Igualando os denominadores:

24/12 - 5/12 =

19/12.

e) 2/3 + 4/10 + 1/15 =

Igualando os denominadores:

20/30 + 12/30 + 2/30 =

32/30 + 2/30 =

34/30 = 17/15.

f) 10/12 - 2/3 =

Igualando os denominadores:

10/12 - 8/12 =

2/12 = 1/6.

Answer 2

a)

3/10 + 2/5

3/10 + 4/10

(3 + 4)/10

7/10

b)

2 + 5/12

24/12 + 5/12

(24 + 5)/12

29/12

c)

1/3 + 5/12 + 10/15

1/3 + 5/12 + 2/3

(1 + 2)/3 + 5/12

3/3 + 5/12

1 + 5/12

12/12 + 5/12

(12 + 5)/12

17/12

d)

2 - 5/12

24/12 - 5/12

(24 - 5)/12

19/12

e)

2/3 + 4/10 + 1/15

2/3 + 2/5 + 1/15

10/15 + 6/15 + 1/15

(10 + 6 + 1)/15

17/15

f)

10/12 - 2/3

5/6 - 2/3

5/6 - 4/6

(5 - 4)/6

1/6

att. yrz