diff --git a/matrix.c b/matrix.c
index 29b5349..5ed4953 100644
--- a/matrix.c
+++ b/matrix.c
@@ -9,7 +9,7 @@ Matrix createMatrix(unsigned int rows, unsigned int cols)
 {
     Matrix matrix;
 
-    if(rows == 0 || cols == 0)
+    if (rows == 0 || cols == 0)
     {
         matrix.rows = 0;
         matrix.cols = 0;
@@ -17,7 +17,6 @@ Matrix createMatrix(unsigned int rows, unsigned int cols)
         return matrix;
     }
 
-
     matrix.rows = rows;
     matrix.cols = cols;
 
@@ -78,31 +77,69 @@ MatrixType getMatrixAt(const Matrix matrix, unsigned int rowIdx, unsigned int co
 
 Matrix add(const Matrix matrix1, const Matrix matrix2)
 {
-    if (matrix1.rows != matrix2.rows || matrix1.cols != matrix2.cols)
+    if (matrix1.rows == matrix2.rows && matrix1.cols == matrix2.cols) // gleiche Dimension
     {
-        fprintf(stderr, "Fehler: Matrizen haben unterschiedliche Größen (%u x %u) und (%u x %u)\n",
-                matrix1.rows, matrix1.cols, matrix2.rows, matrix2.cols);
+        Matrix result = createMatrix(matrix1.rows, matrix1.cols);
 
-        Matrix empty = {0, 0, NULL};
-        return empty;
-    }
+        if (result.buffer == NULL)
+        {
+            fprintf(stderr, "Fehler: Speicher konnte nicht reserviert werden!\n");
+            return result;
+        }
 
-    Matrix result = createMatrix(matrix1.rows, matrix1.cols);
-
-    if (result.buffer == NULL)
-    {
-        fprintf(stderr, "Fehler: Speicher konnte nicht reserviert werden!\n");
+        for (int i = 0; i < matrix1.rows; i++)
+        {
+            for (int j = 0; j < matrix1.cols; j++)
+            {
+                result.buffer[i * result.cols + j] = matrix1.buffer[i * matrix1.cols + j] + matrix2.buffer[i * matrix2.cols + j];
+            }
+        }
         return result;
     }
-
-    for (int i = 0; i < matrix1.rows; i++)
-    {
-        for (int j = 0; j < matrix1.cols; j++)
+        if (matrix1.rows == matrix2.rows && matrix2.cols == 1) // Matrix 2 hat eine Spalte
         {
-            result.buffer[i * result.cols + j] = matrix1.buffer[i * matrix1.cols + j] + matrix2.buffer[i * matrix2.cols + j];
+            Matrix result = createMatrix(matrix1.rows, matrix1.cols);
+
+            if(result.buffer == NULL)
+            {
+                fprintf(stderr, "Fehler: Speicher konnte nicht reserviert werden!\n");
+                return result;
+            }
+            for (int i = 0; i < matrix1.rows; i++)
+            {
+                for (int j = 0; j < matrix1.cols; j++)
+                {
+                    result.buffer[i * result.cols + j] = matrix1.buffer[i * matrix1.cols + j] + matrix2.buffer[i];
+                }
+            }
+            return result;
         }
-    }
-    return result;
+
+        if (matrix1.rows == matrix2.rows && matrix1.cols == 1) // Matrix 1 hat eine Spalte
+        {
+            Matrix result = createMatrix(matrix2.rows, matrix2.cols);
+
+            if(result.buffer == NULL)
+            {
+                fprintf(stderr, "Fehler: Speicher konnte nicht reserviert werden!\n");
+                return result;
+            }
+            for (int i = 0; i < matrix2.rows; i++)
+            {
+                for (int j = 0; j < matrix2.cols; j++)
+                {
+                    result.buffer[i * result.cols + j] = matrix1.buffer[i] + matrix2.buffer[i * matrix2.cols + j];
+                }
+            }
+            return result;
+        }
+    
+    // passt nicht
+    fprintf(stderr, "Fehler: Matrizen haben unterschiedliche Größen (%u x %u) und (%u x %u)\n",
+            matrix1.rows, matrix1.cols, matrix2.rows, matrix2.cols);
+
+    Matrix empty = {0, 0, NULL};
+    return empty;
 }
 
 Matrix multiply(const Matrix matrix1, const Matrix matrix2)
@@ -134,8 +171,8 @@ Matrix multiply(const Matrix matrix1, const Matrix matrix2)
             {
                 sum += matrix1.buffer[i * matrix1.cols + k] * matrix2.buffer[k * matrix2.cols + j];
             }
-            result.buffer[i * result.cols +j] = sum;
+            result.buffer[i * result.cols + j] = sum;
         }
     }
     return result;
-}
\ No newline at end of file
+}