Question

Porfavor! Eu precise de isso para hoje!!

I= 40/77 × 33/56

J= 9/8 - 7/6

K= -21/25 × -7/-10

Answer 1

I)

= 40/77 × 33/56

= 77/33 (:11)/(:11) . 40/56 (:8)/(:8)

= 7/3 . 5/7

= 7/7 . 5/3

= 1 . 5/3

= 5/3

R.: 5/3

J)

= 9/8 - 7/6

= (3.9 - 7.4)/24

= (27-28)/24

= - 1/24

8,6: 2

4,3: 2

2,3: 2

1,3: 3

1,1 = 2.2.2.3 = 24

R.: - 1/24

K)

= - 21/25 × ( -7/-10)

= - 21/25 . 7/10

= - 147/250

R.: - 147/250