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2 . (9x - 3b) / 3 = 3(3x - b) / 3
= 3x - b
3 . (a² - 2a) / (4a³ - 6a²) = a(a - 2) / a²(2a - 3)
= (a - 2) / a(2a - 3)
4) (2a²b² - ab) / (4a²b - 2b²) = 2ab(2ab - 1) / 2b(a² - b)
= a(2ab - 1) / (a² - b)
5) (a² - 7a + 12) / (a² + 2a - 15) = (a - 3) (a - 4) / (a - 3)(a + 5)
= (a - 4) / (a + 5)
6) (bx² - 6bx - 16b) / (bx² + 50bx + 96b) = b(x + 2)(x - 8) / b(x + 2)(x + 48)
= (2x - 8) / (x + 48)
7) (8c²d³ - 4cd³) / (12c²d² - 6cd³) = 4cd³ (2c - 1) / 6cd² (2c - d)
= 2d (2c - 1) / 3cd(2c - d)
9) (a² - 4a + 4) / (a² - 4) = (a - 2)(a - 2) / (a - 2)(a + 2)
= (a - 2) /(a + 2)
10) (x² - 4x + 3) / (x² - 2x + 1) = (x - 1) (x - 3) / ((x - 1)(x - 1)
= (x - 3)(x - 1)