Penjelasan dengan langkah-langkah:
Pecahan
nomor ( 2 ) dijadikan desimal
[tex]1 \frac{2}{5} - 0,3 + \frac{1}{4} = \frac{7}{5} - \frac{3}{10} + \frac{1}{4} \\ samakan \: semua \: penyebutnya \\ \frac{(7 \: . \: 4)}{(5 \: . \: 4)} - \frac{(3 \: . \: 2)}{(10 \: . \: 2)} + \frac{(1 \: . \: 5)}{(4 \: . \: 5)} \\ \frac{28}{20} - \frac{6}{20} + \frac{5}{20} = \frac{(28 - 6 + 5)}{20} \\ \frac{27}{20} = 1 \frac{7}{20} = 1,035 \approx1,35[/tex]
nomor ( 3 ) dijadikan pecahan biasa/campuran
[tex] \frac{5}{6} \: . \: 20\% \div 0,1 = \frac{5}{6} \: . \: \frac{20}{100} \div \frac{1}{10} \\ \frac{5}{6} \: . \: \frac{1}{5} \: . \: 10 = \frac{5}{6} \: . \: 2 \\ \frac{10}{6} = \frac{5}{3} = 1 \frac{2}{3} [/tex]
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Penjelasan dengan langkah-langkah:
Pecahan
nomor ( 2 ) dijadikan desimal
[tex]1 \frac{2}{5} - 0,3 + \frac{1}{4} = \frac{7}{5} - \frac{3}{10} + \frac{1}{4} \\ samakan \: semua \: penyebutnya \\ \frac{(7 \: . \: 4)}{(5 \: . \: 4)} - \frac{(3 \: . \: 2)}{(10 \: . \: 2)} + \frac{(1 \: . \: 5)}{(4 \: . \: 5)} \\ \frac{28}{20} - \frac{6}{20} + \frac{5}{20} = \frac{(28 - 6 + 5)}{20} \\ \frac{27}{20} = 1 \frac{7}{20} = 1,035 \approx1,35[/tex]
nomor ( 3 ) dijadikan pecahan biasa/campuran
[tex] \frac{5}{6} \: . \: 20\% \div 0,1 = \frac{5}{6} \: . \: \frac{20}{100} \div \frac{1}{10} \\ \frac{5}{6} \: . \: \frac{1}{5} \: . \: 10 = \frac{5}{6} \: . \: 2 \\ \frac{10}{6} = \frac{5}{3} = 1 \frac{2}{3} [/tex]