[tex]a) \left \{ {{x+1|x+6} \atop {x+1|x+1}} \right. \Rightarrow x+1|5 \Rightarrow x \in\{0,4\}[/tex]
[tex]b) \left \{ {{x+2|2x+29} \atop {x+2|2(x+2)}} \right. \Rightarrow x+2|25 etc...[/tex]
[tex]c) \left \{ {{2x-1|4x+19} \atop {2x-1|2(2x-1)}} \right \Rightarrow 2x-1|21...[/tex]
