Làm giúp mik nha.

Question

Làm giúp mik nha.
lam-giup-mik-nha

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Eirian 4 years 2020-10-28T14:42:46+00:00 2 Answers 83 views 0

Answers ( )

  1. kiet
    0
    2020-10-28T14:43:52+00:00
    Reply

    `+`

    `x + 28 : 7 = 101`

    `x + 28/7 = 101`

    `x = 101 : 28/7`

    `x = 101/4`

    `+`

    `2x – 7 = 53`

    `2x = 53 + 7 = 60`

    `x = 60 : 2 = 30`

    `+`

    `404 : (2x – 9) = 4`

    `2x – 9 = 404 : 4 = 101`

    `2x = 101 + 9 = 110`

    `x = 110 : 2`

    `x = 55`

    `+`

    `119 : (30 – x) = 17`

    `30 – x = 119 : 17`

    `30 – x = 7`

    `x = 30 – 7`

    `x = 23`

    – Answered by Meett1605

  2. Cherry
    0
    2020-10-28T14:44:22+00:00
    Reply

    1 là 97

    2 là 69

    3 là 55

    4 là 502

    5 là 23

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