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Log(2x+7) - Log(x-1) = Log5
Log(2x+7 / x-1) = Log5
de aqui igualamos terminos, sería:
2x+7 / x-1 = 5
2x+7 = 5(x-1)
2x+7 = 5x-5
7+5 = 5x-2x
12 = 3x ------------> x = 4
esta es la respuesta