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posted by Sarah on Tuesday, December 11, 2012 at 5:55pm.

log3 (x+1) - log3 (x-3) = 2

log3 [(x+1)/(x-3)] = 2 (x+1)/(x-3) = 3^2 = 9 x+1 = 9x-27 8x = 28 x = 7/2

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