Răspuns :
[tex]\it 11-(-4+x)\geq-1-x \Rightarrow 11+4-x\geq-1-x \Rightarrow 11+4+1=-x+x \Rightarrow\\ \\ \Rightarrow 16\geq0x \Rightarrow x\in\mathbb{R}[/tex]
[tex]\it 11-(-4+x)\geq-1-x \Rightarrow 11+4-x\geq-1-x \Rightarrow 11+4+1=-x+x \Rightarrow\\ \\ \Rightarrow 16\geq0x \Rightarrow x\in\mathbb{R}[/tex]