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23 January, 16:15

Is - 8 a solution of - 9f=64-f

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  1. 23 January, 19:44
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    -9f = 64 - f ... add f to both sides

    -9f + f = 64

    -8f = 64 ... divide both sides by - 8

    f = - 64/8

    f = - 8 < = = = yes, - 8 is a solution
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