[tex]\displaystyle \left \{ {{x-3v=5} \atop {2x-4v=32}} \right.\\ \\-2(-3v+x)+(-4v+2x)=-2*5+32\\2v=22\\v=11\\-3v+11=5\\x=38\\(v,x)=(11,38)[/tex]
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[tex]\displaystyle \left \{ {{x-3v=5} \atop {2x-4v=32}} \right.\\ \\-2(-3v+x)+(-4v+2x)=-2*5+32\\2v=22\\v=11\\-3v+11=5\\x=38\\(v,x)=(11,38)[/tex]