а) +,-,+,-,+ 3 + (-3) + 3 + (-3) + 3 = 3 - 3 + 3 - 3 + 3 = 3 + 3 + 3 = 6 + 3 = 9 + 3 = 12 + 3 = 15 + 6 = 21 Ответ: а) +,-,+,-,+
а) +,-,+,-,+
3 + (-3) + 3 + (-3) + 3 = 3 - 3 + 3 - 3 + 3 = 3 + 3 + 3 = 6 + 3 = 9 + 3 = 12 + 3 = 15 + 6 = 21
Ответ: а) +,-,+,-,+