Пошаговое объяснение:
лва а аьвre4th is the first of many of our clients and family to the first of many of our friends and family to the first of many of our friends and family to the first of many of our friends and family to the first of many of our friends and family to the first of many of our friends and family to the first of many of our friends and family to the first of many of our friends and family to the first of many of our friends and family to the first of many of our friends and family to the first of many of our friends and family to the first of many of our friends and family to the first of many of our friends and
Пусть х км - расстояние, которое должен проехать автомобиль, тогда (5/14)х км - пройденное расстояние, х - (5/14)х км - оставшееся расстояние. Уравнение:
х - (5/14)х = (5/14)х + 66
х - (5/14)х - (5/14)х = 66
х - (10/14)х = 66
х - (5/7)х = 66
(2/7)х = 66
х = 66 : 2/7
х = 66 · 7/2
х = 33 · 7
х = 231
ответ: 231 км.
Всё расстояние примем за единицу (целое).
1) 1 - 5/14 = 14/14 - 5/14 = 9/14 - оставшаяся часть пути;
2) 9/14 - 5/14 = 4/14 = 2/7 - на столько больше осталось проехать;
3) Находим целое по его части:
66 : 2/7 = 66 · 7/2 = 33 · 7 = 231 (км) - такой путь должен проехать автомобиль.
Вiдповiдь: 231 км має проїхати автомобіль.