How to setup system of linear equations in matrix form?

I have a system of four linear equations that I need to put into matrix form. Equations are in the form of:

5x1+4x2-2x3+6x4=4

3x1+6x2+6x3+4.5x4=10 etc.

Answer 1

[Ameer Hamza]

You can do it by making a matrix A of coefficients and a matrix b of the number on right side of the equations.

A = [column_of_coefficients_of_x1, column_of_coefficients_of_x2, ... column_of_coefficients_of_xn];
b = [column_of_values on RHS of the equations];

For the equations, you gave in the question,

A = [5 4 -2 6; ...
    3  6  6 4.5];
b = [4; ...
     10];

You can then solve the system using

A\b

Answer 2

[Walter Roberson]

https://www.mathworks.com/matlabcentral/answers/406874-symbolic-equation-factorisation-how-to-identify-automatically-the-factor-in-front-one-variable-and#answer_325750