Câu 5. (3x-10)+71=136

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Câu 5. (3x-10)+71=136

cau-5-3-10-71-136

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Edana Edana 1 year 2020-11-10T06:12:26+00:00 2 Answers 59 views 0

Answers ( )

    0
    2020-11-10T06:13:59+00:00

    Đáp án:

    ` 23/3`

    Giải thích các bước giải:

    `5.(3x-10)+71=136`

    `⇔15x-50+71=136`

    `⇔15x=115`

    `⇔x=23/3`

    0
    2020-11-10T06:14:25+00:00

    (3x-10)+71=136

    => 3x-10=65

    => 3x=75

    => x=25

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