Question

СРОЧНО РЕШИТЬ НОМЕР 846

Answer 1

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

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

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