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23 October, 22:19

If a+b=9 and x+y=1 what is - 3b-3y-3a-3x

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  1. 24 October, 00:28
    0
    Hello from MrBillDoesMath!

    Answer:

    -30

    Discussion:

    -3b - 3y - 3a - 3x = > (rearrange terms so a, b and x, y together)

    -3a - 3b - 3x - 3y = > (factor 3 from each term)

    -3 (a+b) - 3 (x+y) = > (substitute values provided by problem)

    -3 (9) - 3 (1) = >

    -27 - 3 = - 30

    Regards,

    MrB
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