What is the sum of the given matrices? the 2 by 3 matrix, row 1, column 1, 4 column 2, 19 column 3, negative 5 row 2, column 1, 7 column 2, 0 column 3, negative 14 plus the 2 by 3 matrix, row 1, column 1, negative 8 column 2, 7 column 3, 0 row 2, column 1, negative 1 column 2, 17 column 3, 6 is equal to