75persen+4/5-0,4 jawab dengan jalan pecahan
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[tex]75\% + \frac{4}{5} - 0.4 \\ \\ = \frac{75}{100} + \frac{4}{5} - \frac{4}{10} \\ \\ = \frac{3}{4} + \frac{4}{5} - \frac{2}{5} \\ \\ = \frac{15 + 16 - 8}{20} \\ \\ = \frac{23}{20} = 1 \frac{3}{20} [/tex]
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