Dari persamaan 1 dan (2) diperoleh: 3 + 2 = 0 × 1 + = −1 × 2 3 + 2 = 0 2 + 2 = −2 Type equation here. + 0 = 2 = 2 = 2 disubstitusikan ke persamaan (2) + = −1 2 + = −1 = 3 30 | P a g e K E L A S X I