x + 7 =9 halpppppppppppppppppppppppppppppppppppppp

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x + 7 =9 halpppppppppppppppppppppppppppppppppppppp

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Yến Oanh 4 years 2021-08-01T16:08:41+00:00 1 Answers 11 views 0

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  1. Doris
    0
    2021-08-01T16:09:50+00:00
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    Answer:

    x = 2

    Step-by-step explanation:

    x + 7 = 9

       -7    -7

        x  =  2

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