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13 February, 10:51

3[-x+2 (2x+1) ]=-1 what does x equal

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  1. 13 February, 13:06
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    3[-x+2 (2x+1) ]=-1

    Multiply the bracket by 2

    (2) (2x) (2) (1)

    4x+2

    3 [-x+4x+2]=-1

    3 [3x+2]=-1

    Multiply the bracket by 3

    (3) (3x) (3) (2) = -1

    9x+6=-1

    Move + 6 to the other side. Sign changes from + 6 to - 6

    9x+6-6=-1-6

    9x=-7

    Divide by 9 for both sides.

    9x/9=-7/9

    x=-7/9

    Answer: x=-7/9
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