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12 November, 00:55

Stella says the solution to the equation 3x-6=-12 is - 12. Is she correct? Why or why not?

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  1. 12 November, 00:57
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    3x - 6 = - 12

    can be written as 3x=-12 + 6 (sign changes when we change sides)

    therefore:

    3x = - 6

    x = - 6/3

    x = - 2

    She is therefore in correct.
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