Question

1). ( - 2 5/9 + 1 20/21 ) : 1 8/49 - 1 7/9 : ( - 6 )

/ - дробом. 

Решить пример .

Answer 1

(-23/9 +41/21):57/49 - 16/9:(-6) = (-161/63+123/63):57/49 + 8/27=-38/63:57/49 + 8/27 =

-266/513+152/513 = -114/513 = -2/9