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maka pertidak samaannya menjadi
8x+11< 3(x^2+4x-7)
8x+11<3x^2+12x-21
0< 3x^2+12x-8x-11-21
0< 3x^2+4x-32
o<(3x-8)(x+4)
3x-8>0 x+4>0
3x>8 x>-4
x>8/3