Question

a)2 1/4+1 /6
b)4 1/2-1 3/4
c)2-7/8+1/2
d)5/9+2/3-1​

Answer 1

Oi....

Resolução:

a)

2 1/4 + 1/6

9/4 + 1/6 ⇒mmc 4, 6 = 12

27 + 2/12

29/12

b)

4 1/2 - 1 3/4

9/2 - 7/4⇒ mmc 2, 4 = 4

18 - 7/4

11/4

c)

2 - 7/8 + 1/2 ⇒mmc 1, 8, 2 = 8

16 - 7 + 4/8

20 - 7/8

13/8

d)

5/9 + 2/3 - 1⇒ mmc 9, 3, 1 = 9

5 + 6 - 9/9

11 - 9/9

2/9

Bons estudos.​