ответ: 17/18
Пошаговое объяснение
x + 2 1/3 + 3 1/9 + 1 1/12 = 5 7/12
x + 2 12/36 + 3 4/36 + 1 3/36 = 5 21/36
x + 6 19/36 = 5 21/36
x = 5 21/36 - 6 19/36
x = 5 21/36 - 5 55/36
x = - 34/36
x = - 17/18
ответ: 17/18
Пошаговое объяснение
x + 2 1/3 + 3 1/9 + 1 1/12 = 5 7/12
x + 2 12/36 + 3 4/36 + 1 3/36 = 5 21/36
x + 6 19/36 = 5 21/36
x = 5 21/36 - 6 19/36
x = 5 21/36 - 5 55/36
x = - 34/36
x = - 17/18