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29 October, 15:27

20 - (3x-9) - 2 = - (-11x+1)

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  1. 29 October, 16:07
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    Answer: x = 2

    Explanation

    20 - (3x - 9) - 2 = - (-11x + 1)

    20 - (3x - 9) - 2 = 11x - 1

    20 - 3x + 9 - 2 = 11x - 1

    20 - 2 - 3x + 9 = 11x - 1

    18 - 3x + 9 = 11x - 1

    + 1 + 1

    19 - 3x + 9 = 11x

    19 + 9 - 3x = 11x

    28 - 3x = 11x

    + 3x + 3x

    28 = 14x

    : 14 : 14

    2 = x

    Check:

    20 - (3 (2) - 9) - 2 = - (-11 (2) + 1)

    20 - (6 - 9) - 2 = - (-22 + 1)

    20 - (-3) - 2 = - (-21)

    20 + 3 - 2 = 21

    23 - 2 = 21

    21 = 21 yes
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