Quanto é
6 + ( - 9 + 1 )
8 - ( - 6 + 10 )
- 10 + ( 6 - 4)
2 + ( 2 + 5 - 7 )
- 5 + ( 2 - 4 ) - ( 7 - 1 )
6 + ( - 9 + 1 )
8 - ( - 6 + 10 )
- 10 + ( 6 - 4)
2 + ( 2 + 5 - 7 )
- 5 + ( 2 - 4 ) - ( 7 - 1 )
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Verified answer
6 + ( - 9 + 1 ) = -2
8 - ( - 6 + 10 ) = 4
- 10 + ( 6 - 4) = -8
2 + ( 2 + 5 - 7 ) = 2
- 5 + ( 2 - 4 ) - ( 7 - 1 ) = -9
6+(-9+1) =-2
8-(-6+10)=4
-10+(6-4)=8
2+(2+5-7)=2
-5+(2-4)-(7-1)=-9