12) (- 3 5/12 - 2 4/15) : (- 6 3/20);

Question

Вопрос:

12) (- 3 5/12 - 2 4/15) : (- 6 3/20);

Accepted Answer

12) (- 3 5/12 - 2 4/15) : (- 6 3/20) = (- 41/12 - 34/15) : (-123/20) = ((-41 * 5)/(12 * 5) - (34 * 4)/(15 * 4)) : (-123/20) = (-205/60 - 136/60) : (-123/20) = - (205 + 136)/60 : (-123/20) = - 341/60 * (-20/123) = (341 * 20)/(60 * 123) = (341 * 1)/(3 * 123) = 341/369

Ответ: 341/369