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21 June, 19:26

9x+18+3x=1

9x+18 = - 2

9x = - 20

x = - 20/9

Find the error in the solution and then solve correctly

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  1. 21 June, 20:07
    0
    The error is in the second step they subtracted 3 from both sides but it was a 3x, which you can not do.

    Correction.

    9x+18+3x=1

    12x+18=1

    12x=-17

    x=-17/12
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