Question

1- Calcule as somas e subtrações das frações abaixo

A) 1/3 + 2/3?

B) 1/4 + 7/2 + 1/8?

C) 7/5 + 3/4?

D) 1/5 + 2/3?

E) 3/7 + 1/3?

F) 3/8 + 2/4?

G) 3/2 + 4/3 + 5/12?

H) 3 + 1/4?

I) 5 + 1/2 + 3/5?

J) 1 - 1/5?

K) 7 - 5/2?

L) 3/8 - 1/4?

M) 3/9 - 1/8?

N) 4 - 3/7?

O) 7/4 + 3/2 - 1/5?

2) Calcule as divisões das frações abaixo:

A) 7/5 : 2/3?

B) 1/4 : 9/10?

C) 7/8 : 1/9?

D) 1/10 : 3/2?

E) 3/9 : 2?

F) 1/4 : 9/10?

Preciso disso pra amanhã, podem me ajudar nessa?

Answer 1

1A) 3/3 = 1
1B) 2/8 + 28/8 + 1/8 = 31/8
1C) 28/20 + 15/20 = 43/20
1D) 3/15 + 10/15 = 13/15
1E) 9/21 + 7/21 = 16/21
1F) 3/8 + 4/8 = 7/8
1G) 18/12 + 16/12 + 5/12 = 39/12 = 13/4
1H) 12/4 + 1/4 = 13/4
1I) 50/10 + 5/10 + 6/10 = 61/10
1J) 5/5 - 1/5 = 4/5
1K) 14/2 - 5/2 = 9/2
1L) 3/8 - 2/8 = 1/8
1M) 24/72 - 9/72 = 15/72 = 5/24
1N) 28/7 - 3/7 = 25/7
1O) 35/20 + 30/20 - 4/20 = 61/20
2A) 7/5 * 3/2 = 21/10
2B) 1/4 * 10/9 = 10/36 = 5/18
2C) 7/8 * 9/1 = 63/8
2D) 1/10 * 2/3 = 2/30 = 1/15
2E) 3/9 * 1/2 = 3/18 = 1/6
2F) 1/4 * 10/9 = 10/36 = 5/18