Răspunsuri

2014-07-20T14:07:28+03:00
2014 + 2013 (2012- 2014)
2014 + 2013 x( -2)
2013+ 2013 x (-2) + 1
1+ 2013 x (-2 +1)
1- 2013
-2012
2014-07-20T14:07:31+03:00
2014+2012x2013-2013x2014=2014+2013(2012-2014)=2014+2013(-2)=2014-4026=-2012