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12p - 24 = 15p + 4
12p - 15p = 4 + 24
-3 p = 28
p = - 28/3
3x - 5/4 = (x + 4/3)(x - 1/2)
3x - 5/4 = x² - 1/2x + 4/3x - 2/3
3x - 5/4 = x² - 5/6x - 2/3 kalikan dengan 12
36x - 15 = 12x² - 10x - 8
12x² - 46x + 7 = 0
(6x - 1)(2x - 7) = 0
6x - 1 = 0 atau 2x - 7 = 0
6x = 1 atau 2x = 7
x = 1/6 atau x = 7/2
Hp { 1/6 , 7/2}