Respostas

2014-08-25T02:14:11-03:00
2 (x -3) +3 (x +1) < 36

2x -6 +3x +3 < 36

2x +3x < 36 +6 -3

5x < 42 -3

5x < 39

x < 39/5

x < 7,8
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