Question

Даю 35 баллов решите срочно
ГЛАВНОЕ С РЕШЕНИЕМ!

Answer 1

Объяснение:

а) 5/18-7/12= 10/36-21/36=10-21/36= -11/36

Б) 18*28/9=56

В)( 0,4+3,2):4/9= 3,6:4/9=36/10:4/9=36*9/10*4=1,8

Answer 2

$a) \frac{5}{8} - \frac{7}{12} = \frac{15}{24} - \frac{14}{24} = \frac{1}{24}$

$b)18 \times 3 \frac{4}{9} = 18 \times \frac{31}{9} = \frac{18 \times 31}{9} = \frac{2 \times 31}{1} = 62$

$\beta )( \frac{2}{5} + 3.2) \div \frac{4}{9} = ( \frac{2}{5} + \frac{32}{10} ) \div \frac{4}{9} = ( \frac{2}{5} + \frac{16}{5} ) \div \frac{4}{9} = \frac{18}{5} \div \frac{4}{9} = \frac{18 \times 9}{5 \times 4} = 8.1$