Question

a- (+2/5) + (+22/10)
b- (+12/2) + (+4/4)
c- (-21/7) - (-7/21)
d- (-22/4) - (-2/10)
e- (+22/100) x (+22/27)
f- (+27/10) x (+12/27)
g- (+2/1 ) ÷ (2/100)
h- (+22/12) ÷ (+2/100)
se alguém puder me ajudar, agradeço!

Answer 1

a.

2/5 + 22/10 : (2)

2/5 + 11/5

(2 + 11)/5

13/5

b.

12/2 + 4/4

6 + 1

7

c.

- 21/7 - (- 7/21)

- 21/7 + 7/21 : (7)

- 3 + 1/3

(- 9 + 1)/3

- 8/3

d.

- 22/4 - (- 2/10)

- 22/4 + 2/10 : (2)

- 11/2 + 2/10

(- 55 + 2)/10

- 53/10

e.

22/100 . 22/27 : (2)

11/50 . 22/27 : (2)

11/25 . 11/27

(11 . 11)/(25 . 27)

121/675

f.

27/10 . 12/27 : (27)

1/10 . 12 : (2)

1/5 . 6

(1 . 6)/(5 . 1)

6/5

g.

2/1 ÷ 2/100

2/1 . 100/2 : (2)

1/1 . 100

1 . 100

100

h.

22/12 ÷ 2/100

22/12 . 100/2 : (2)

11/6 . 100/2 : (2)

11/6 . 50 : (2)

11/3 . 25

(11 . 25)/(3 . 1)

275/3