Question

решите пример (-1 3/8-2 5/12):5 5/12

Answer 1

$( - 1 frac{3}{8 } - 2 frac{5}{12} ) div 5 frac{5}{12} = ( - 1frac{3 times 3}{8 times 3} - 2 frac{5 times2 }{12 times 2} ) div frac{65}{12} = ( - 1 frac{9}{24} - 2 frac{10}{24} ) times frac{12}{65} = - 3 frac{ - 9 - 10}{24} times frac{12}{65} = (- 3 - frac{19}{24} ) times frac{12}{65} = - 3 frac{19}{24} times frac{12}{65} = - frac{91}{24 }times frac{12}{65} = - frac{7}{2} times frac{1}{5} = - frac{7}{10} = - 0.7$