Question

Решите 5 примеров, пожалуйста

Answer 1

1)
$( { (frac{18}{10})}^{2} - frac{23}{10} times frac{9}{5} ) div frac{18}{7} = ( frac{324}{100} - frac{207}{50} ) times frac{7}{18} = frac{324 - 414}{50} times frac{7}{18} = frac{ - 90}{50} times frac{7}{18} = - frac{7}{10}$
2)
$= ( frac{9}{5} times frac{11}{10} - ( frac{16}{10} )^{2} ) div frac{8}{3} = ( frac{88}{50} - frac{256}{100} ) times frac{3}{8} = frac{176 - 256}{100} times frac{3}{8} = frac{ - 80}{100} times frac{3}{8} = - frac{3}{10}$
3)
$= ( {( frac{15}{10}) }^{2} - frac{11}{5} times frac{3}{2}) div frac{7}{4} = ( frac{225}{100} - frac{33}{10} ) times frac{4}{7} = frac{225 - 330}{100} times frac{4}{7} = frac{ - 105}{100} times frac{4}{7} = frac{ - 6}{10}$
4)
$= ( frac{9}{10} times frac{7}{5} - { (frac{14}{10} )}^{2} ) div frac{7}{3} = ( frac{63}{50} - frac{196}{100} ) times frac{3}{7} = frac{ 126 - 196}{100} times frac{3}{7} = frac{ - 70}{100} times frac{3}{7} = - frac{3}{10}$

5)
$frac{33}{8} - frac{9}{4} times ( frac{4}{3} div frac{9}{4} + 2) = frac{33}{8} - frac{9}{4} times ( frac{4}{3} times frac{4}{9} + 2) = frac{33}{8} - frac{9}{4} ( frac{16}{27} + frac{54}{27} ) = frac{33}{8} - frac{9}{4} times frac{70}{27} = frac{33}{8} - frac{630}{108} = frac{891 - 1260}{216} = - frac{369}{216} = - frac{41}{24}$