half a number decreased by three is equal to 38 less than four times the number

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half a number decreased by three is equal to 38 less than four times the number

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Kim Chi 1 day 2021-07-21T18:11:54+00:00 1 Answers 0 views 0

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    2021-07-21T18:13:30+00:00

    Answer:

    10

    Step-by-step explanation:

    let the unknown number be x

    so half of x decreased by 3 is

    1/2x -3

    It is equal to 38 less than 4 times the number which is x; 4x-37

    THEREFORE;

    ½x-3 =4x -38

    x-6/2 = 4x-38

    cross-multiply

    x-6 =8x -76

    x-8x = -76+6

    -7x = -70

    Divide both sides by -7

    So x =10

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