Use of backslash while calculating the product of inverse of a matrix and another matrix

I am trying to implement successive overrelaxation method. I am getting different answers when I distributed the inverse between two matrices

First way:

 xt = (D+omg*L)\((D*(1-omg)-omg*U)*xn+omg*B);

Second way:

 xt = (D+omg*L)\((D*(1-omg)-omg*U)*xn)+omg*(D+omg*L)\B);

where D, L, and U are matrices of same size, xn is a vector and omg is a scalar value. But when I use "inv" function instead of backslash, I am getting the same answer in both the cases i.e,

 xt = inv(D+omg*L)*((D*(1-omg)-omg*U)*xn+omg*B);
 xt = inv(D+omg*L)*((D*(1-omg)-omg*U)*xn)+omg*inv(D+omg*L)*B);

Answer 1

[Andrei Bobrov]

Maybe for "second way":

xt = (D+omg*L)\((D*(1-omg)-omg*U)*xn+omg*((D+omg*L)\B));

[Yaswanth Sai]

Thank you! I understood the mistake.