[tex]a) \: 5(3x - 1) < 20 \\ 15x - 5 < 20 \\ 15x < 25 \\ x < \frac{5}{3} \\x \: apartine \: ( - \infty . \frac{5}{3} ) \\ b) \: 4(3x + 6) > 12 \\ 12x + 24 > 12 \\ 12x > - 12 \\ x > - 1 \\ x \: apartine \: ( - 1. + \infty )[/tex]
punctele din intervale sunt in locul virgulelor
