In the last step of the simplification why does {k dt} simplify to {-kt}. I'm very confused

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In the last step of the simplification why does {k dt} simplify to {-kt}. I'm very confused where the minus comes from

dx/dt = k(75 - x) ➮ dx/(75 -x) = k dt ➮ ln(75 - x) = -kt

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Financial Reporting and Analysis Using Financial Accounting Information

ISBN: 978-1439080603

12th Edition

Authors: Charles H Gibson

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Posted Date: Jan 26, 2020 09:40 AM

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In the last step of the simplification why does {k dt} simplify to {-kt}. I'm very confused

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Financial Reporting and Analysis Using Financial Accounting Information

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