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x+2 l 2x +29 x=?
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Răspuns :

X+2|2x+29; X+2|x+2/*2; X+2|2x+4 X+2|2x+29=>x+2|(2x+29-2x-4)=> x+2|25 => x+2€ D25 => x+2€(1,5,25,-1,-5,-25)-2 =>x€(-1,3,23,-3,-7,-27) Bafta!