Verified Answer :

Stephyoreos13

-2(-x-y)= 8 ----->  2x+2y=8                        -x+7= 8

-2x-y= -1  ----->  -2x-y= -1                            -7    -7

                           0+y= 7                           -x = 1

 y = 7                x= -1

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