Hasil pengurangan 8/7 - 1/4 - 2/5 adalah.....

[tex] = \frac{8}{7} - \frac{1}{4} - \frac{2}{5} \\ \\ = \frac{160}{140} - \frac{35}{140} - \frac{56}{140} \\ \\ = \frac{69}{140} \\ \\ [/tex]

8/7 - 1/4 - 2/5 = 160-35-56/140 = 69/140