Răspunsuri

2014-04-15T13:04:48+03:00
2x-1/11  ⇒2x-1∈{-1,1,-11,11}

2x-1=-1   2x=0  x=0
2x-1=1   2x=2   x=1
2x-1=-11   2x=-10   x=-5
2x-1=11  2x=12  x=6