Question

Найдите значение выражения (9 5/6-8 13/15):29+6,5*4/13

Answer 1

(9 5/6 - 8 13/15) / 29 + 6,5 * 4 1/3 = (59/6 - 133/15) / 29 + 13/2 * 13/3 =
  (59*5/30 - 133*2/30) / 29 + 169/6 = (295/30 - 266/30) / 29 + 169/6 = 
   29/30 / 29 + 169/6 = 1/30 + 169/6 = 1/30 + 169*5/30 = (1 + 845)/30 = 846/30 = 28 6/30 = 28 1/5