Предмет: Математика, автор: ulanovaliana8

помогите пожалусто даю 10 баллов

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Автор ответа: zhandayletumirbek

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2 задание

1)-23

2)17

3)-13

4)1

5)-1

6)-17

7)-2,5

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Much has been said about how anti-social the Internet and mobile phones are. The truth is however, according to new research, communication technology is bringing people closer together. A study by the Pew Internet and American Life Project found family members were keeping in regular contact today more than ever before. And this is all down to e-mail, chat, our cellphones and SMS messaging. It makes sense. Years ago, it took a long time to write a letter, then find an envelope and go to the post office to buy a stamp and post it. Today we write mails while we wait for our change in the convenience store and they’re sent in an instant. Having free Internet telephone calls also helps us to stay in touch more often and for longer. Everyone’s at it, from five-year-olds to tech-savvy grandparents.
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x:623=57
x-30817=5274
807574-x=30299
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2)Столбик
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