Question

plz answer my question friends
I need your help
answer 10th question ​

Answer 1

Answer:

putting the value

(a+b)+c=a+(b+c)

(-8+(-7))+6= -8+(-7+6)

-8-7+6= -8-1

-8-1 =-8-1

-9=-9

Answer 2

this. is the answer no need to explain more.