Respostas

2014-03-29T11:05:43-03:00
-68+{44+[29-(18)]}
-68+{44+[11]}
-68+55= -13
2014-03-29T11:06:56-03:00
-68+{44+[29-(40-31+9)]}
-68+{44+[29-18]}
-68+{44+11}
-68+55
-13
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