Please help with steps #4

Compute by hand for the solution of three linear equations provided below using LU factorization numerical method. Apply pivoting (Rearrange the order of equations first so that the pivot element has the largest absolute value, then the next equation with the second largest absolute value, and the last equation with pivot element to have the least absolute value). 3x - 3y + z = 10 -6x + 4y - 2z = 1 12x + y + 3z = -2 LU Factorization Method for linear systems: [A]{x} = {b} Step 1: Decompose [A] into [U] and [L] using Gauss forward elimination Step 2: Solve for {d} from [L] and {b} using forward substitution Step 3: Solve for {x} from [U] and {d} using back substitution