Ответ:
Пошаговое объяснение:
= 8/15 * (15/4m - 5/16n) - 3/20 * (20/3m - 40/9n) =
8/4m - 40/240n - m + 120/180n =
2m - 1/6n - m + 2/3n =
m - 1/6n + 4/6n = m + 3/6n = m + 1/2n
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Ответ:
Пошаговое объяснение:
= 8/15 * (15/4m - 5/16n) - 3/20 * (20/3m - 40/9n) =
8/4m - 40/240n - m + 120/180n =
2m - 1/6n - m + 2/3n =
m - 1/6n + 4/6n = m + 3/6n = m + 1/2n