Question

6. Oblicz: 1 1/3 + 3/4​

Answer 1

Odpowiedź:

a) 1 1/3 + 3/4 = 1 4/12 + 9/12 = 1 13/12 = 2 1/12

b) 2 5/6 + 1 3/7 = 2 35/42 + 1 18/42 = 3 53/42 = 4 11/42

c) 2/9 + 5/6 = 4/18 + 15/18 = 19/18 = 1 1/18

d) 1 7/10 + 2 3/4 = 1 14/20 + 2 15/20 = 3 29/20 = 4 9/20

licze na naj :)

Answer 2

Odpowiedź:

Szczegółowe wyjaśnienie:

6. Oblicz

a)  

+ 1 1/3 + 3/4 = 3/3 + 1/3 + 3/4 = 4/3 + 3/4 =

= 4*4/3*4 + 3*3/4/3 = 16/12 + 9/12 =  

= 25/12 = 24/12 + 1/12 = 2 + 1/12 = 2 1/12  (2 cale i 1/12)

b)  

2 5/6 + 1 3/7 = 12/6 + 5/6 + 7/7 + 3/7 =

= 17/6 + 10/7 = 17*10/6*7 + 10*6/7*6 =

= 170/42 + 60/42 = 230/42 =  210/42 + 30/42 = 5 + 15/21

c)

2/9+ 5/6 = 2*6/9*6 + 5*9/6*9 = 12/54 + 45/54 =

57/54 = 54/54 + 3/54 = 1 + 1/18 = 1 1/18

d)

1 7/10 + 2 3/4 = 10/10 + 7/10  + 8/4 + 3/4 =

= 17/10 + 11/4 = 17*4/10*4 + 11*10/4*10 =

= 68/40 + 110/40 = 178/40 = 160/40 + 18/40 = 4 + 9/20 = 4 9/20