Question

СРОЧНО РЕШИТЬ НОМЕР 846

Answer 1

$1) \frac{10 \frac{10}{11}:12 }{2 \frac{21}{22} } *6 \frac{1}{2} = \frac{ \frac{120}{11}* \frac{1}{12} }{ \frac{65}{22} } * \frac{13}{2} = \frac{10}{11} : \frac{65}{22} * \frac{13}{2} = \\ \\ = \frac{10*22*13}{11*65*2} = \frac{5*2*1}{1*5*1} =2$

$2) \frac{8:2 \frac{2}{5} }{5 \frac{1}{4} :7} : \frac{2 \frac{1}{7}: \frac{5}{7} }{4: \frac{8}{9} } \\ \\ 1)8:2 \frac{2}{5} =8: \frac{12}{5} = \frac{8*5}{12} = \frac{2*5}{3} = \frac{10}{3} \\ \\ 2)5 \frac{1}{4} :7= \frac{21}{4*7} = \frac{3}{4} \\ \\ 3) \frac{10}{3} : \frac{3}{4} = \frac{10*4}{9} = \frac{40}{9} \\ \\ 4)\frac{15*7}{7*5} =3\\\\5) \frac{4*9}{8} = \frac{9}{2}$

$6) \frac{3*2}{9} = \frac{2}{3} \\ \\ 7) \frac{40}{9} : \frac{2}{3} = \frac{40*3}{9*2} = \frac{20}{3} =6 \frac{2}{3}$