Question

Помогите пожалуйста!!!!! Номер: 1213,1214

Answer 1

1213.
1)
$2.5 times 3 times ( - 8) = - 60$
2)
$- 25 times 17 times ( - 0.4) = 170$
3)
$3 frac{4}{7} times ( - 18) times frac{7}{25} = - ( frac{25}{7} times frac{18}{1} times frac{7}{25} = \ = - 18$
4)
$( - 2 frac{5}{9} ) times 27 times frac{9}{23} = - ( frac{23}{9} times frac{27}{1} times frac{9}{23}) = - 27$
5)
$0.125 times 3 frac{14}{15} times ( - 8) = \ - ( frac{125}{1000} times frac{59}{15} times frac{8}{1} ) = - frac{59}{15} = \ = 3 frac{14}{15}$
6)
$- 4 frac{1}{11} times ( - 5.5) times 2 = frac{45}{11} times frac{55}{10} times frac{2}{1} = \ = 45$
1214.
1)
$- 122 times 83 - 61 times 46 - ( - 6) times 122 = \ = - 61(2 times 83 + 46 + ( - 6) times 2) = \ = - 61(166 + 46 - 12) = - 61 times 200 = - 12200$
2)
$- 136 times 57 - 68 times 36 - 50 times 68 = \ = - 68(2 times 57 + 36 + 50) = \ = - 68(114 + 36 + 50) = \ = - 68 times 200 = - 13600$