Verified answer

A) 6+(-9+1)

6+(-8)

6-8=-2

B)8-(-6+10)

8-4=4

C)-10+(6-4)

-10+2=-8

D)2+(2+5-7)

2+0=2

E)-5+(2-4)-(7-1)

-5+(-4)-6

-5-4-6=-15

F)(-5+3)-(5-9)+(8-1)-11

-2-(-4)+7-11

-2+4+7-11=-2

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