Question

efetue:
$\binom{1} {6} - \binom{2}{3} + \binom{5}{9} - \binom{7}{18}$
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Answer 1

Resposta:

1/3

Explicação passo-a-passo:

$( \frac{1}{6} ) - ( \frac{2}{3} ) + ( \frac{5}{9} ) - ( \frac{7}{18} ) = \\ \\ mmc \: 6.3.9.18 = 18 \\ \frac{3 - 12 + 10 - 7}{18} = \\ \\ \frac{ - 6}{8} \div 6 = \frac{1}{3}$