Question

решите пожалуйста (2/7:3/7+(4 1/2-3 5/6) *3 1/3) : (6 1/2 : 9)

Answer 1

$( frac{2}{7} times frac{7}{3} + ( frac{9}{2} - frac{23}{6} ) times frac{10}{3} ) div ( frac{13}{2} times frac{1}{9} ) = \ = (2 times frac{1}{3} + frac{2}{3} times frac{10}{3}) div frac{13}{18} = \ = ( frac{2}{3} + frac{20}{9} ) times frac{18}{13} = frac{26}{9} times frac{18}{13} = 2 times 2 = 4$