Question

решите пожалуйста все

Answer 1

2)
$(5 frac{3}{8} + 18 frac{1}{2} - 7 frac{5}{24} ) div 16 frac{2}{3} = ( frac{43}{8} + frac{37}{2} - frac{173}{24} ) div frac{50}{3} = ( frac{129}{24} + frac{444}{24} - frac{173}{24} ) times frac{3}{50} = frac{400}{24} times frac{3}{50} = frac{8}{8} = 1$
3)
$(12 frac{5}{12} + 1 frac{2}{3} - 3 frac{5}{6} + 2 frac{3}{4} ) div (2 frac{1}{2} times frac{2}{5} - frac{7}{9} ) = ( frac{149}{12} + frac{5}{3} - frac{23}{6} + frac{11}{4} ) div ( frac{5}{2} times frac{2}{5} - frac{7}{9} ) = ( frac{149}{12} + frac{20}{12} - frac{46}{12} + frac{33}{12} ) div (1 - frac{7}{9} ) = frac{156}{12} div frac{2}{9} = 13 times frac{9}{2} = frac{117}{2} = 58 frac{1}{2}$
4)
$48 frac{3}{5} div 6 frac{3}{4} times frac{5}{12} - 2 frac{5}{6} + 1 frac{75}{94} times (1 frac{1}{2} times frac{1}{3} - frac{13}{26} ) = frac{243}{5} div frac{27}{4} times frac{5}{12} - frac{17}{6} + frac{169}{94} times ( frac{3}{2} times frac{1}{3} - frac{1}{2} ) = frac{243}{5} times frac{4}{27} times frac{5}{12} - frac{17}{6} + frac{169}{94} times ( frac{1}{2} - frac{1}{2}) = 3 - frac{17}{6} + frac{169}{94} times 0 = frac{18}{6} - frac{17}{6} = frac{1}{6}$