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2014-11-18T18:45:34+02:00
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2014-11-18T18:47:15+02:00
(3+x):2<43+x<8
x<5

 2(x-3)<6 x-3<3
x<6

3x+2(x+1)<93x+2x+2<9
5x<7
x<7/5
1 5 1