Question

a 3612
11
b) 25 100
-
c) 15 20
5
12 18
=
25 100​

Answer 1

Resposta:

a) 13/18

b) 1/4

c) 5/4

d) 13/36

e) 47/100

Explicação passo-a-passo:

a)

5/36 + 7/12 (MMC = 36)

(5 + 3.7)/36 = 26/36 = 13/18

b)

9/25 - 11/100 (MMC = 100)

(4.9 - 11)/100 = (36 - 11)/100 = 25/100

= 1/4

c)

12/15 + 9/20

MMC = 60

15. 20. 2

15. 10. 2

15. 5. 3

5. 5. 5

1. 1. 60

12/15 + 9/20 = (4.12 + 3.9)/60

(48 + 27)/60 = 75/60 = 15/12 = 5/4

d)

5/12 - 1/18

MMC = 36

12. 18. 2

6. 9. 2

3. 9. 3

1. 3. 3

1. 1. 36

5/12 - 1/18 = (3.5 - 2)/36 = (15 - 2)/36

= 13/36

e)

9/25 + 11/100 = (4.9 + 11)/100

(36 + 11)/100 = 47/100

Answer 2

Resposta:

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