pembahasan :
3x + 7
______ - 2 > 0
3x - 1
3x + 7 - 6x + 2
_____________ > 0
3x - 1
-3x + 9
_______ > 0
3x - 1
-3x + 9 = 0
-3x = -9
x = 3
3x - 1 = 0
3x = 1
x = 1/3
Buat garis bilangannya:
1/3 < x < 3
jawaban : B
pembahasan :
3x + 7
______ - 2 > 0
3x - 1
3x + 7 - 6x + 2
_____________ > 0
3x - 1
-3x + 9
_______ > 0
3x - 1
-3x + 9 = 0
-3x = -9
x = 3
3x - 1 = 0
3x = 1
x = 1/3
Buat garis bilangannya:
1/3 < x < 3
jawaban : B
Editor: Muhammad Khusaini