❀ Resolvemos:
Para resolver este cálculo, primero transformamos el número decimal a fracción y luego realizamos las operaciones:
[tex]1.9 - ( \frac{4}{5} + \frac{3}{4} ) = \\ \\ \frac{19}{10} - ( \frac{4}{5} + \frac{3}{4} ) = \\ \\ \frac{19}{10} - \frac{20 \div 5 \times 4 + 20 \div 4 \times 3}{20} = \\ \\ \frac{19}{10} - \frac{16 + 15}{20} = \\ \\ \frac{19}{10} - \frac{31}{20} = \\ \\ \frac{20 \div 10 \times 19 - 20 \div 20 - 31}{20} = \\ \\ \frac{38 - 31}{20} = \\ \\ \frac{7}{20} [/tex]
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- Solución:
❀ Resolvemos:
Para resolver este cálculo, primero transformamos el número decimal a fracción y luego realizamos las operaciones:
[tex]1.9 - ( \frac{4}{5} + \frac{3}{4} ) = \\ \\ \frac{19}{10} - ( \frac{4}{5} + \frac{3}{4} ) = \\ \\ \frac{19}{10} - \frac{20 \div 5 \times 4 + 20 \div 4 \times 3}{20} = \\ \\ \frac{19}{10} - \frac{16 + 15}{20} = \\ \\ \frac{19}{10} - \frac{31}{20} = \\ \\ \frac{20 \div 10 \times 19 - 20 \div 20 - 31}{20} = \\ \\ \frac{38 - 31}{20} = \\ \\ \frac{7}{20} [/tex]