tolongin dong nomor 4,5,6 pakai cara

5.
[tex]1 \frac{3}{5} \times 1.5 \div 20\% \\ = \frac{8}{5} \times \frac{15}{10} \div \frac{20}{100 } \\ = \frac{8}{5} \times \frac{15}{10} \times \frac{100}{20} \\ = 12[/tex]