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(3x + 7) < - 5 atau 3x + 7 > 5
3x < - 12 3x > - 2
x < - 4 x > - 2/3
(3x+7)² > 5²
(3x+7)² - 5² >0
(3x+7-5) (3x+7+5) > 0
(3x+2) (3x+12) > 0
(x = 2/3) (x+2) (x = 4 )
semoga benar, maaf jika salah karena saya juga masih dalam tahap belajar :)