Ответ №1
A * b = b * a
a * b * c = a * (b * c)
(a + b + c) * d = ad + bd + cd
(a - b) * c = ac - bc
a * 1 = 1 * a = a
a * 0 = 0 * a = 0
Ответ №1
A * b = b * a
a * b * c = a * (b * c)
(a + b + c) * d = ad + bd + cd
(a - b) * c = ac - bc
a * 1 = 1 * a = a
a * 0 = 0 * a = 0
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