diff --git a/Direct Methods for Solving Linear Systems/outer_product_gaussian_elimination.m b/Direct Methods for Solving Linear Systems/Alg1_outer_product_gaussian_elimination.m
similarity index 83%
rename from Direct Methods for Solving Linear Systems/outer_product_gaussian_elimination.m
rename to Direct Methods for Solving Linear Systems/Alg1_outer_product_gaussian_elimination.m
index 8d43864..64dd6f7 100644
--- a/Direct Methods for Solving Linear Systems/outer_product_gaussian_elimination.m	
+++ b/Direct Methods for Solving Linear Systems/Alg1_outer_product_gaussian_elimination.m	
@@ -1,5 +1,5 @@
 % Algorithm 1: Outer Product Gaussian Elimination (Alg. 3.2.1)
-function A = outer_product_gaussian_elimination(A)
+function A = Alg1_outer_product_gaussian_elimination(A)
 
 [n, m] = size(A);
 if n ~= m
@@ -14,4 +14,6 @@ end
      rows = k + 1 : n;
      A(rows, k) = A(rows, k)/A(k, k);
      A(rows, rows) = A(rows, rows) - A(rows, k) * A(k, rows);
- end
\ No newline at end of file
+ end
+ 
+end
\ No newline at end of file
diff --git a/Direct Methods for Solving Linear Systems/gaussian_elimination_with_complete_pivoting.m b/Direct Methods for Solving Linear Systems/Alg2_gaussian_elimination_with_complete_pivoting.m
similarity index 92%
rename from Direct Methods for Solving Linear Systems/gaussian_elimination_with_complete_pivoting.m
rename to Direct Methods for Solving Linear Systems/Alg2_gaussian_elimination_with_complete_pivoting.m
index 521d913..c760e74 100644
--- a/Direct Methods for Solving Linear Systems/gaussian_elimination_with_complete_pivoting.m	
+++ b/Direct Methods for Solving Linear Systems/Alg2_gaussian_elimination_with_complete_pivoting.m	
@@ -1,4 +1,4 @@
-function [P, Q, L, U] = gaussian_elimination_with_complete_pivoting(A)
+function [P, Q, L, U] = Alg2_gaussian_elimination_with_complete_pivoting(A)
 
 [n, m] = size(A);
 if n ~= m
diff --git a/Direct Methods for Solving Linear Systems/forward_substitution.m b/Direct Methods for Solving Linear Systems/Alg3_forward_substitution.m
similarity index 86%
rename from Direct Methods for Solving Linear Systems/forward_substitution.m
rename to Direct Methods for Solving Linear Systems/Alg3_forward_substitution.m
index 591e6d0..84a0acb 100644
--- a/Direct Methods for Solving Linear Systems/forward_substitution.m	
+++ b/Direct Methods for Solving Linear Systems/Alg3_forward_substitution.m	
@@ -1,5 +1,5 @@
 % Algorithm 3: Forward Substitution (Alg. 3.1.1)
-function b = forward_substitution(L, b)
+function b = Alg3_forward_substitution(L, b)
 
 [n, m] = size(L);
 if n ~= m
diff --git a/Direct Methods for Solving Linear Systems/back_substitution.m b/Direct Methods for Solving Linear Systems/Alg4_back_substitution.m
similarity index 90%
rename from Direct Methods for Solving Linear Systems/back_substitution.m
rename to Direct Methods for Solving Linear Systems/Alg4_back_substitution.m
index 0861344..f994f62 100644
--- a/Direct Methods for Solving Linear Systems/back_substitution.m	
+++ b/Direct Methods for Solving Linear Systems/Alg4_back_substitution.m	
@@ -1,5 +1,5 @@
 % Argorithm 4: Back Substitution (Alg. 3.1.2)
-function b = back_substitution(U,b)
+function b = Alg4_back_substitution(U,b)
 
 [n, m] = size(U);
 if n ~= m
diff --git a/Direct Methods for Solving Linear Systems/gauss_jordan_elimination.m b/Direct Methods for Solving Linear Systems/Alg5_gauss_jordan_elimination.m
similarity index 81%
rename from Direct Methods for Solving Linear Systems/gauss_jordan_elimination.m
rename to Direct Methods for Solving Linear Systems/Alg5_gauss_jordan_elimination.m
index 09c63bc..2985500 100644
--- a/Direct Methods for Solving Linear Systems/gauss_jordan_elimination.m	
+++ b/Direct Methods for Solving Linear Systems/Alg5_gauss_jordan_elimination.m	
@@ -1,6 +1,6 @@
-% Algorithm 5: Gauss-Jordan Elimination
+% Algorithm 5: Gauss-Jordan Elimination (Alg.
 % Argument A is an augmented matrix
-function A = gauss_jordan_elimination(A)
+function A = Alg5_gauss_jordan_elimination(A)
 
 % M – rows, N – columns
 
diff --git a/Direct Methods for Solving Linear Systems/main.m b/Direct Methods for Solving Linear Systems/main.m
index 129d201..b0a94f5 100644
--- a/Direct Methods for Solving Linear Systems/main.m	
+++ b/Direct Methods for Solving Linear Systems/main.m	
@@ -7,7 +7,7 @@ A = [2, -1, 0, 0;
 
 b = [0;0;0;5];
 
-B = outer_product_gaussian_elimination(A);
+B = Alg1_outer_product_gaussian_elimination(A);
 U = triu(B);
 L = tril(B, -1);
 x = back_substitution(U, b);
@@ -23,7 +23,7 @@ b = [0;0;0;5];
 
 B = gauss_jordan_elimination([A b])
 
-[P, Q, L, U] = gaussian_elimination_with_complete_pivoting(A);
+[P, Q, L, U] = Alg2_gaussian_elimination_with_complete_pivoting(A);
 
 b = P*b;
 % Ly = b and Ux = y
@@ -40,7 +40,7 @@ A = [1, 1, 1;
 
 b = [1;2;1];
 
-[P, Q, L, U] = gaussian_elimination_with_complete_pivoting(A);
+[P, Q, L, U] = Alg2_gaussian_elimination_with_complete_pivoting(A);
 
 b = P*b;
 % Ly = b and Ux = y
@@ -69,11 +69,13 @@ A = [2, 1, 2;
      1, 2, 3;
      4, 1, 2];
  
-[P, Q, L, U] = gaussian_elimination_with_complete_pivoting(A);
+[P, Q, L, U] = Alg2_gaussian_elimination_with_complete_pivoting(A);
 
 I = P*eye(3);
 % Ly = b and Ux = y
 y = forward_substitution(L, I);
 
 X = Q*back_substitution(U, y)
-inv(A)
\ No newline at end of file
+inv(A)
+
+%% Problem 6