+0  
 
0
758
2
avatar
5(-1)+4(-3(-1))
 Oct 9, 2013
 #1
avatar
0
3*4. -5+12
7
 Oct 9, 2013
 #2
avatar+118723 
0
5(-1)+4(-3(-1))
=-5 + 4*3
=7
 Oct 9, 2013

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