[tex]\it |x+3|\leq2 \Rightarrow -2\leq x+3\leq2|_{-3} \Rightarrow -5\leq x\leq-1 \Rightarrow A=[-5,\ -1]\\ \\ |3x-1|\leq4 \Rightarrow -4\leq3x-1\leq4|_{+1} \Rightarrow -3\leq3x\leq5|_{:3} \Rightarrow B=\Big[-1,\ \dfrac{5}{3}\Big]\\ \\ A\cup B=\Big[-5,\ \ \dfrac{5}{3}\Big]\\ \\ \\ A\cap B=\{-1\}\ \ \ (\ partea\ lor\ comun\breve a\ )\\ \\ \\ A-B=[-5,\ \ -1)\\ \\ \\ B-A=\Big(-1,\ \ \dfrac{5}{3}\Big][/tex]
