Bahasan 1 d − b A −1 = ad bc - − c a 2 1 1 3 -1 A = → A −1 = 5 3 2.3 - 1.5 2 -5 1 3 − 1 = 6 - 5 − 5 2 3 − 1 = − 5 2 19 November 2020 29