Write a general an m-file to solve a system of linear equations by using cramer's rule. you should have in the argument (a, b, n), which (a) represents the coefficients , and (b) is a column vector that represents the right hand- side of the equations, and(n) represents the number of equations or the unknowns.

Water at 70°f and streams enter the mixing chamber at the same mass flow rate, determine the temperature and the quality of the exiting stream. 0 psia is heated in a chamber by mixing it with saturated water vapor at 20 psia. if both streams enters the mixing chamber at the same mass flow rate, determine the temperature and the quality of the existing system.