(13 2///3*2 1///7-12 2///3*2 1///7):1 1///14*3 1///3+1///3=?   ///-это дробь типо 13 2///3=   13  2                                                      3

(13 2///3*2 1///7-12 2///3*2 1///7):1 1///14*3 1///3+1///3=?

///-это дробь типо 13 2///3=   13  2

                                                     3

Ответ:

(13 2/3 * 2 1/7-12 2/3 * 2 1/7):1 1/14 * 3 1/3+1/3=(41/3 *15/7-38/3):15/14 *10/3+1/3=

=(615/21-38/3):15/14*10/3+1/3=(205/7-38/3):15/14*10/3+1/3=

=349/21 : 15/14 *10/3 +1/3 =48860/945+1/3=49175/945=9835/189=52 7/189

Источник: https://znanija.com/task/220226