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2014-04-18T14:08:21+03:00
2{3/2x-7/-2}=5+9=14
3/2x-7/-2=14/2=7
3/2x-7/=7+2=9
/2x-7/=9/3 =3  ⇒2x-7∈{-3,3}

2x-7=3          2x-7=-3
2x=3+7         2x=-3+7
2x=10           2x=4
x=5                x=2