Question

а)1-(4/9+1/12) б)1-(3/8-1/12)

в)8/9-(1/12+5/18)

пж помогите​

Answer 1

$a) \: - ( \frac{4}{9} + \frac{1}{12}) = - \frac{16}{36} - \frac{3}{36 } = - \frac{19}{36}$

$b) \: 1 - ( \frac{3}{8} - \frac{1}{12}) = 1 - ( \frac{9}{24} - \frac{2}{24} ) = \\ \\ = 1 - \frac{7}{24} = \frac{24}{24} - \frac{7}{24} = \frac{17}{24}$

$c) \: \frac{8}{9} - ( \frac{1}{12} + \frac{5}{18} ) = \frac{32}{36} - ( \frac{3}{36} + \frac{10}{36} ) \\ \\ = \frac{32}{36} - \frac{13}{36} = \frac{19}{36}$