Предмет: Алгебра, автор: Keenwod71

Решите плиз 9 класс 1)A1=5 A2=7 S10-? 2)a1=11 d=3 A7-? A21-?

Ответы

Автор ответа: Joker45
0

1) S10=115  2)A7=29 A21=41

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