Sagot :
[tex]-2(x-7)=-(2x+5) \\\\ -2x+14=-2x-5 \\\\ -2x+2x=-5-14 \\\\ 0=-19 \\\\ \boxed{x=\emptyset} [/tex]
[tex]-2 (x-7)=-(2x+5) \\
-2x+14=-2x-5\\
14=-5\\
x\in\emptyset[/tex]