Question

Найдите значение выражения: 2,56/3,2 * 0,44/0,12 * 2,25/0,6 5,72 * 3/11 8,4 / 2 1/3 6,3 * 1 2/9 если можно с объяснением! заранее ! : )

Answer 1

$\frac{2.56}{3.2} * \frac{0.44}{0.12} * \frac{2.25}{0.6} =11 \\ \\ 1) \frac{2.56}{3.2} = \frac{256}{100} : \frac{32}{10} = \frac{256*10}{100*32} = \frac{8}{10} = \frac{4}{5} \\ \\ 2) \frac{44}{100} : \frac{12}{100} = \frac{44*100}{100*12} = \frac{11}{3} \\ \\ 3) \frac{225}{100} : \frac{6}{10} = \frac{225*10}{100*6} = \frac{75}{2*10} = \frac{15}{2*2} = \frac{15}{4} \\ \\ 4) \frac{4*11*15}{5*3*4} =11$
  

$\frac{572}{100} * \frac{3}{11} = \frac{52*3}{100} = \frac{13*3}{25} = \frac{39}{25} =1 \frac{14}{25} =1.56 \\ \\$

$\frac{84}{10} : 2\frac{1}{3} = \frac{42}{5} : \frac{7}{3} = \frac{42*3}{5*7} = \frac{126}{35} =3.6$

$\frac{63}{10} * 1\frac{2}{9} = \frac{63}{10} * \frac{11}{9} = \frac{7*11}{10}= \frac{77}{10} =7.7$