Two or more equations will make form of a system of linear simultaneous equations if such equations be linear in the same two or more variables.
For illustration, the given systems of the two equations is simultaneous in the two variables x and y.
2x + 6y = 23
4x + 7y = 10
The solution of a system of linear instantaneous equations is a set of values of the variables that simultaneously satisfy all the equations of the system.