2,8:0,4= TOLONG DI JAWAB!

2,8 = 28/10
0,4 = 4/10

28/10 : 4/10
= 28/10 x 10/4
= 280/40
= 7

2,8 : 0,4 = 7

[tex] \frac{28}{10} : \frac{4}{10} = \frac{28}{10} x \frac{10}{4} = \frac{28}{4} = 7[/tex]

kalo nggak percaya itung pakek kalkulator. :D