When did linear equations were use for the first time?

Linear equations can be traced back to ancient civilizations, with some of the earliest known uses found in Babylonian mathematics around 2000 BCE. The Babylonians developed methods to solve linear equations, often in the context of problems related to trade and land measurement. Additionally, ancient Greek mathematicians like Euclid further explored these concepts. However, the formalization of linear equations as we understand them today evolved over centuries, particularly during the Renaissance and the development of algebra.