Invers of matrix and equation solution in fortran

Question

How to get the inverse of a 5*5 matrix in fortran i have a script of least square methode in the end i get a matrix equation to solve (normal system )
Matrix A(5,5)*x=matrix b so =>
x = inv(a)*b i dont want to add 20 line of code to do it , and if i can get x without calculate invers of A then tell me how pls

Answer 1

Look into Github, you may find some examples