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16 April, 12:29

If rs = 3x + 1, st = 2x - 2, and rt = 64, find the value of x

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  1. 16 April, 12:47
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    rs + st = rt Plug in the values

    3x + 1 + 2x - 2 = 64 Combine like terms (1 and - 2)

    3x - 1 + 2x = 64 Combine like terms (3x and 2x)

    -1 + 5x = 64 Add 1 to both sides

    5x = 65 Divide both sides by 5

    x = 13
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