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rezolvati inecuatia 2x-1mai mic sau egal x+3(x-2)

Răspuns :

[tex]\displaystyle 2x-1 \leq x+3(x-2) \\ \\ 2x-1 \leq x+3x-6 \\ \\ 2x-x-3x \leq -6+1 \\ \\ -2x \leq -5 \\ \\ 2x \geq 5 \Rightarrow x \geq \frac{5}{2} \Rightarrow x\in \left[ \frac{5}{2} ,+\infty\right)[/tex]