Question

Вычелите 12*2 1/6; 14*2 11/14; 24*5 5/12; 15*1 1/30.

Answer 1

1)
$12 times 2 : frac{1}{6} = 12 times frac{13}{6} = frac{12 times 13}{1 times 6} = \ \ = frac{2 times 13}{1 times 1} = frac{26}{1} = 26$
Ответ: 26



2)
$14 times 2 : frac{11}{14} = 14 times frac{39}{14} = frac{14 times 39}{1 times 14} = frac{1 times 39}{1 times 1} = frac{39}{1} = 39$

Ответ: 39.



3)
$24 times 5 : frac{5}{12} = 24 times frac{65}{12} = frac{24 times 65}{1 times 12} = frac{2 times 65}{1 times 1} = frac{130}{1} = 130$

Ответ: 130


4)
$15 times 1 : frac{1}{30} =15 times frac{31}{30} = frac{15 times 31}{1 times 30} = frac{1 times 31}{1 times 2} = frac{31}{2} = 15.5$
Ответ: 15,5