Given cap A is equal to the 2 by 2 matrix, row 1, column 1, 2 column 2, negative 7 row 2, column 1, 6 column 2, 1 and cap b is equal to the 2 by 2 matrix, row 1, column 1, negative 9 column 2, 5 row 2, column 1, 1 column 2, negative 1 If cap x minus cap A is equal to cap b , what is cap x ?