Hasil dari 2/5 + 1,2 - 80% adalah

[tex] \frac{2}{5} + 1.2 - 80\% \\ = \frac{40}{100} + \frac{120}{100} - \frac{80}{100} \\ = \frac{40 + 120 - 80}{100} \\ = \frac{80}{100} = \frac{4}{5} = 0.8[/tex]