A number n plus 7 is less than or equal to 9.

Question

A number n plus 7 is less than or equal to 9.

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Khải Quang 6 months 2021-07-31T04:04:46+00:00 1 Answers 18 views 0

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    2021-07-31T04:05:56+00:00

    Answer:

    n=2

    Explanation:

    n+7=9

    n=9-7

    n=2

    + -= –

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Giải phương trình 1 ẩn: x + 2 - 2(x + 1) = -x . Hỏi x = ? ( )