Question

Найдите ответ х в прогрессии

Answer 1

1)
$frac{152}{10} times frac{1}{4} - frac{4851}{100} div frac{147}{10} = frac{38}{10} - frac{4851}{100} times frac{10}{147} = frac{38}{10} - frac{33}{10} = frac{5}{10} = 0.5$
2)
$( frac{13}{44} - frac{2}{11} - frac{5}{66} div 2 frac{1}{2} ) times 1 frac{1}{5} = ( frac{13}{44} - frac{2}{11} - frac{5}{66} div frac{5}{2} ) times frac{6}{5} = ( frac{13}{44} - frac{2}{11} - frac{5}{66} times frac{2}{5} ) times frac{6}{5} = ( frac{13}{44} - frac{2}{11} - frac{1}{33} ) times frac{6}{5} = ( frac{39}{132} - frac{24}{132} - frac{4}{132} ) times frac{6}{5} = frac{11}{132} times frac{6}{5} = frac{1}{12} times frac{6}{5} = frac{1}{10} = 0.1$
3)
$frac{32}{10} + frac{8}{10} ( frac{55}{10} - frac{13}{4} ) = frac{16}{5} + frac{4}{5} ( frac{11}{2} - frac{13}{4} ) = frac{16}{5} + frac{4}{5} ( frac{22}{4} - frac{13}{4} ) = frac{16}{5} + frac{4}{5} times frac{9}{4} = frac{16}{5} + frac{9}{5} = frac{25}{5} = 5$
4) x = 0,5*5/0,1 = 25
Ответ: B) 25