x > -16
x > 0
0 < x < 6
0 < x <16
Correct answer is A
13x + 12x = 2+3x6x > 14x
= 4(2 + 3x) > 6x = 12x2 - 2x = 0
= 2x(6x - 1) > 0 = x(6x - 1) > 0
Case 1 (-, -) = x < 0, 6x - 1 > 0
= x < 0, x < 16 (solution)
Case 2 (+, +) = x > 0, 6x - 1 > 0 = x > 0
x > 16
Combining solutions in cases (1) and (2)
= x > 0, x < 16 = 0 < x < 16
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