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11 January, 22:07

Three times a number t minus twelve equals forty

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  1. 12 January, 01:35
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    3 · t - 12 = 40

    3t - 12 = 40 |add 12 to both sides

    3t = 52 |divide both sides by 3

    t = 52/3

    t = 17 1/3
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