0,4 × 5 3/4 = 3 2/3 × 2 3/5 =

[tex] \frac{4}{10} \times \frac{23}{4} = \frac{92}{40} [/tex]

0,4 x 5 3/4
= 4/10 x 23/4
= 92/40
= 2 12/40
= 2 3/10
= 2,3
3 2/3 x 2 3/5
= 11/3 x 13/5
= 143/15
= 9 8/15