If cap A is equal to the 2 by 2 matrix, row 1, column 1, 4 column 2, 2 row 2, column 1, negative 7 column 2, negative 3 and cap b is equal to the 2 by 2 matrix, row 1, column 1, negative 3 column 2, 4 row 2, column 1, negative 1 column 2, 5 , what is the solution to the equation cap A cap x is equal to cap b ?