Найдите значение выражения 3 / 1/35 – 1/60.

Источник: Ященко ОГЭ 2025 (36 вар.)

Решение:

3 / 1/35 – 1/60 = 3 / 1 / 5 ⋅ 7 – 1 / 5 ⋅ 12 = 3 / 1 ⋅ 12 – 1 ⋅ 7 / 5 ⋅ 7 ⋅ 12 = 3 / 5 / 5 ⋅ 7 ⋅ 12 = 3 / 1 / 1 ⋅ 7 ⋅ 12 = 3 : 1 / 7 ⋅ 12 = 3 ⋅ 7 ⋅ 12 / 1 = 252

Ответ: 252