ab + 3c = 3c + aba - b - c = - b - a - c = -1(b + c - a)8(a + b - c) = 8a + 8b - 8c1/4a · 4/5b · 5/6c = 1/6abcТождество: 3c + ab = - b - a - c = 8a + 8b - 8c = 1/6abc
ab + 3c = 3c + ab
a - b - c = - b - a - c = -1(b + c - a)
8(a + b - c) = 8a + 8b - 8c
1/4a · 4/5b · 5/6c = 1/6abc
Тождество: 3c + ab = - b - a - c = 8a + 8b - 8c = 1/6abc