Question

$\frac{2}{4} - \frac{2}{5} - \frac{1}{2 } =$
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Answer 1

Respuesta:

-7/5 =)

Explicación paso a paso:

MCM 4; 5; 2 = 20

$\frac{2}{4} - \frac{2}{5} - \frac{1}{2} = \\ \\ \frac{2 \times 5}{4 \times 5} - \frac{2 \times 4}{5 \times4} - \frac{1 \times 10}{2 \times 10} = \\ \\ \frac{10}{20} - \frac{8}{20} - \frac{10}{20} = \\ \\ \frac{10 - 8 - 10}{20} = \\ \\ - \frac{28}{20} = \\ \\ - \frac{7}{5}$