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Question: What is Simultaneous Equation ?

Answer:

The word simultaneous means at the same time. When a problem involves two variables and they are related by two equations, then the equations have to be solved together, simultaneously.

For example, suppose you need to find the values of x and y so that
2x + y = 7 and x - y = 8
Adding the two equations together gives 3x = 15, from which x = 5, Substituting x = 5 in the first equation gives y = -3. So, the solution satisfying both equation is (x, y) = (5, -3). This solution corresponds to the coordinates of the point of intersection of the two lines representing the equations.