Предмет: Математика, автор: anastasij2002

вычислите 1/1617+1/1718+1/1819+1/1920

Ответы

Автор ответа: mukus13

1/16*17=1/16-1/17
1/17*18=1/17-1/18 и т.д.
= 1/16-1/17+1/17-1/18+1/18-1/19+1/19-1/20=1/16-1/20=1/80

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Эссе на тему "Новый год и Рождество только чтобы заработать деньги"
Хватит 15-20 предложений
По плану:
1. Высказать проблему.
2. Свою точку зрения и 2-3 аргумента
3. Противоположную точку зрения и 2-3 аргумента
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вычислите 1/16*17+1/17*18+1/18*19+1/19*20

Ответы

вычислите 1/1617+1/1718+1/1819+1/1920