Question

выполните действия 6) 5/12+5/6-3/4 7) 4/9-3/10+1/2 8) 8/5+1/10-7/25 9) 6/7-41/42+5/12 пожалуйста нужно скорее

Answer 1

$6) \frac{5}{12} + \frac{10}{12} - \frac{9}{12} = \frac{6}{12} = \frac{1}{2} = 0.5$
$7) \frac{4}{9} - \frac{3}{10} = \frac{40}{90} - \frac{27}{90} = \frac{13}{90} + \frac{1}{2} = \\ = \frac{13}{90} + \frac{45}{90} = \frac{58}{90} = \frac{29}{45}$
$8) \frac{8}{5} + \frac{1}{10} = 1 \frac{3}{5} + \frac{1}{10} = \\ 1 \frac{6}{10} + \frac{1}{10} = 1 \frac{7}{10} - \frac{7}{25} =$
$1 \frac{35}{50} - \frac{14}{50} = 1 \frac{21}{50}$
$9) \frac{36}{42} - \frac{41}{42} = - \frac{5}{42} + \frac{5}{12} = \frac{25}{84}$