Jawaban:
[tex]9) \frac{1}{4} - \frac{1}{3} \times \frac{2}{5} \\ = \frac{1}{4} - \frac{2}{15} \\ = \frac{15}{60} - \frac{8}{60} \\ = \frac{7}{60} (d)[/tex]
[tex]10) \frac{3}{4} + \frac{2}{5} \times \frac{1}{3} \\ = \frac{3}{4} + \frac{2}{15} \\ = \frac{45}{60} + \frac{8}{60} \\ = \frac{53}{60} (a)[/tex]
[tex]11)A × C + B = D \\ = \frac{3}{4} \times \frac{1}{2} + \frac{3}{5} \\ = \frac{3}{8} + \frac{3}{5} \\ = \frac{15}{40} + \frac{24}{40} \\ = \frac{39}{40} (a)[/tex]
12) 7,75 × 2,5 + 4,55
= 19,375 + 4,55
= 23,925 (b)
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Jawaban:
[tex]9) \frac{1}{4} - \frac{1}{3} \times \frac{2}{5} \\ = \frac{1}{4} - \frac{2}{15} \\ = \frac{15}{60} - \frac{8}{60} \\ = \frac{7}{60} (d)[/tex]
[tex]10) \frac{3}{4} + \frac{2}{5} \times \frac{1}{3} \\ = \frac{3}{4} + \frac{2}{15} \\ = \frac{45}{60} + \frac{8}{60} \\ = \frac{53}{60} (a)[/tex]
[tex]11)A × C + B = D \\ = \frac{3}{4} \times \frac{1}{2} + \frac{3}{5} \\ = \frac{3}{8} + \frac{3}{5} \\ = \frac{15}{40} + \frac{24}{40} \\ = \frac{39}{40} (a)[/tex]
12) 7,75 × 2,5 + 4,55
= 19,375 + 4,55
= 23,925 (b)