Respostas

2014-03-22T22:40:07-03:00
+8-[-(+6+4)+(+3-2-1)] 
+8-[-(+10)+(+3-3)] 
+8-[-(+10)+(0)] 
+8-[-10] 
+8+10=+18
2014-03-22T22:43:12-03:00
8 – [ – ( 6 + 4 ) + ( 3 – 2 – 1 ) ]=

8 – [ – ( 10 ) + ( 1 – 1 ) ] =

8 – [ – 10  + 0  ] =

8 – [ – 10]  =

8 + 10 =

18