pluses Jawab butuh besok :)

[tex]17. \: 1.2 \div 80\% \times \frac{8}{9} \\ = \frac{12}{10} \div \frac{80}{100} \times \frac{8}{9} \\ = \frac{12}{10} \times \frac{100}{80} \times \frac{8}{9} \\ = \frac{12}{8} \times \frac{8}{9} \\ = \frac{96}{72} = 1 \frac{24}{72} = 1 \ \frac{1}{3} [/tex]

Semoga membantu ^_^
-Nadzifa