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22 November, 02:41

If 5x=45, find the value of 39-4x

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  1. 22 November, 04:33
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    Step-by-step explanation:

    Divide both sides by 5:

    5x = 45 - -> x = 9

    Substitute the value for x into the second equation:

    39 - 4 (9)

    Simplify:

    39 - 36 - -> 3
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