Question

УПРОСТИТЕ: 5/6(1/5Н+6)-2/3(9-1/2Н)+5/8(4/5Н-8) ЭТО ДРОБИ 5/6 И Т.Д

Answer 1

= 5/6 * 1/5n + 5/6 * 6 - 2/3 * 9 + 2/3 * 1/2n + 5/8 * 4/5n - 5/8 * 8 =
= 1/6n + 5 - 6 + 1/3n + 1/2n - 5 =
= (1/6n + 2/6n + 3/6n) + (5 - 6 - 5) = 6/6n + (-6) = n - 6
Ответ: n - 6.