Question

Сколько будет 19,6 *2 1/2-(2,0625-1 5/12):1/8

Answer 1

19,6 * 2 ½ - (2,0625 - 1 5/12) : ⅛ =

1) 19,6 * 2,5 = 49

2) 2,0625 - 1 5/12 = 20625/10000 - 17/12 =

$\frac{20625}{10000} - \frac{17}{12}$

=

$\frac{247500}{120000} - \frac{170000}{120000}$

=

$\frac{77500}{120000}$

=

$\frac{775}{1200}$

3)

$\frac{775}{1200} \div \frac{1}{8}$

=

$\frac{775}{1200} \times \frac{8}{1}$

=

$\frac{6200}{1200}$

=

$\frac{62}{12}$

=

$\frac{31}{6}$

4)

$49 - \frac{31}{6}$

=

$\frac{49}{1} - \frac{31}{6}$

=

$\frac{294 - 31}{6}$

=

$\frac{263}{6}$