Question

a)2 - 1/9+1/3
b)5-8/4÷2/3+1/2
c)4/5-1/4×5
d)1/4×4/3+5/3×2/4

Answer 1

Oi....

Resolução:

a)

2 - 1/9 + 1/3⇒mmc de 1, 9, 3 = 9

18 - 1 + 3/9

21 - 1/9

20/9

b)

5 - 8/4 ÷ 2/3 + 1/2

5 - 2 × 3/2 + 1/2

5 - 3 + 1/2

2 + 1/2⇒mmc = 2

4 + 1/2

5/2

c)

4/5 - 1/4 × 5

4/5 - 5/4⇒mmc de 5,4 = 20

16 - 25/20

- 9/20

d)

1/4 × 4/3 + 5/3 × 2/4

1/3 + 5/3 × 1/2

1/3 + 5/6⇒mmc de 3, 6 = 6

2 + 5/6

7/6

Boas lições.