Предмет: Алгебра, автор: marinapolanska829

Знайти суму перших 12 членів арифметичної прогресії -3; -1; 1;
сроооочно даю 30 б.

Ответы

Автор ответа: dzusap4

0

Відповідь: к -3 постоянно добовляй 2 типо: -3,-1,1,3,6,9,12,15,18, вроде так

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