$1.)140$ points$]$ Given the system of equations below, use Naive$-$Gauss elimination without pivoting to compute the solution. Carry out calculations to four decimal places. Show all work per the instructions:a$.[10$ points$]$ Show the system of equations after the First Round of Eliminations.b$.[10$ points$]$ Show the system of equations after the Second Round of Elimination.c$.[10$ points$]$ Use back substitution to solve for the unknowns $\{$xi$,$ X$2,$ X$3)$d$.[10$ points$]$ Use the original system of equations to verify your results.