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23 June, 07:14

If the sum of a number and eight is tripled the result is nine less than twice the number. Find the number

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  1. 23 June, 10:22
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    3 (x + 8) = 2x - 9

    Distributive property.

    3x + 24 = 2x - 9

    Subtract 24 from both sides.

    3x = 2x - 33

    Subtract 2x from both sides.

    x = - 33 (this is your answer)

    We can plug this value into the original equation to verify if it's correct.

    3 (x + 8) = 2x - 9

    3 (-33 + 8) = 2 * - 33 - 9

    -75 = - 75 √ this is correct
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