3/4=9/12

4/3=12/9

3/9=12/4

9/3=4/12

mk nghĩ vậy

long and ly are 2 classmates. they go to school everyday at 6:00

cau 5 on,

go,go,turn,

b.a.a.c.b

aaabbb = aaa000 + bbb = a x 111000 + b x 111

= a x 111 x 1000 + b x 111

= 111 x (1000a+ b)

Vậy kết quả là 111