3 4/10 dikurang 1 2/8 pakai jalan

3 4/10 - 1 2/8
= 34/10 - 10/8
= 136/40 - 50/40
= 86/40
= 43/20
= 2 3/20

[tex]3 \ \frac{4}{10} - 1 \ \frac{2}{8} = (3 - 1) + ( \frac{4}{10} - \frac{2}{8} ) [/tex]
[tex] = 2 + \frac{26}{40} = 2 \ \frac{26}{40} = 2 \frac{13}{20} [/tex]
Jadi,hasilnya 2 13/20