ta có \(\frac{121212}{424242}=\frac{121212:60606}{424242:60606}=\frac{2}{7}\)
lay ca tu va mau chia 10101 thi ta dc 12/42 . Sau do ta se rut gon don gian hon
vi ca tu va mau cung chia het cho 6 nen chia ca tu va mau cho 6 thi ta dc 2/7
Vay ds la 2/7
121212/424242
=121212:60606/424242:60606
=2/7