Introduction to pair of linear equations in two variables
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An equation is said to be linear equation in two variables if it is written in the form of ax + by + c=0, where a, b & c are real numbers and the coefficients of x and y, i.e a and b respectively, are not equal to zero. For example, 10x+4y = 3 and -x+5y = 2 are linear equations in two variables.
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General form of pair of linear equations is as above.
The two equations in variables x and y are called pair of linear equations in two variables.
Using the graph, it is easier to find the unique solution of a pair of linear equations.
The point where two lines meet is nothing but the solution of the equations.
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