When I tried to put solve the equation I got the $4$ errors I interpreted the codes wrong since I am pretty new on Mathematica.

Equation in matrix:

$24x_1+20x_2+16x_3=4$
$20x_1+20x_2+19x_3=36$
$16x_1+19x_2+38x_3=19$

This system is set to solve in Jakcobi method after $40$ iterations. Initial approximation is $x_1(0)=0, x_2(0)=0, x_3(0)=0$. and it would be appreciated If you could recommend other methods that I can use for this system! Thanks in advance!

When I tried to solve the equation below, I got the $4$ errors. Since I am pretty new on Mathematica, I don't know what I did wrong.

$24x_1+20x_2+16x_3=4$
$20x_1+20x_2+19x_3=36$
$16x_1+19x_2+38x_3=19$

This system is set to solve in Jacobi method after $40$ iterations. Initial approximation is $x_1(0)=0, x_2(0)=0, x_3(0)=0$. I would appreciate it if someone could recommend other methods that I can use for this system!