Bagaimana cara kerja nya dari 30%+2/4-0,15

[tex]30\% + \frac{2}{4} - 0.15 \\ = \frac{30}{100} + \frac{2}{4} - \frac{15}{100} \\ = \frac{30}{100} + \frac{50}{100} - \frac{15}{100} \\ = \frac{335}{100} \\ = \frac{67}{20} \\ = 3 \frac{7}{20} [/tex]