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# Linear Equations in one variable

In this unit we give examples of simple linear equations and show you how these can be solved. In any equation there is an unknown quantity, x say, that we are trying to find. In a linear equation this unknown quantity will appear only as a multiple of x, and not as a function of x such as x^2, x^3, sin x and so on. Linear equations occur so frequently in the solution of other problems that a thorough understanding of them is essential. Video tutorial 34 mins.