Question 840031
-x + 2y = 7  --- 1
-2x -y = -1  ---2
Multiplying equ 2 by 2
 -4x - 2y = -2 --- 3

Solving equation 1 and 3

-x + 2y = 7
-4x -2y = -2
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-5x = 5
x = -1
 
Substituting value of x in equ 1

1 + 2y = 7
2y = 6
Y=3
Values of X= -1 and Y= 3