1) -4x + -2y = -16
1x + -1y = -2
(x,y) = ( .. , .. )

2) -6x + -4y = -2
2x + -6y = -14
(x,y) = ( .. , .. )

3) -2x + -2y = 12
-4x + -5y = 25
(x,y) = ( .. , .. )

4) -6x + -4y = 22
6x + -3y = -15
(x,y) = ( .. , .. )

5) 2x + -4y = -2
-1x + 5y = 1
(x,y) = ( .. , .. )

6) 2x + -5y = 7
5x + 3y = 2
(x,y) = ( .. , .. )

7) 1x + 2y = -13
4x + 5y = -40
(x,y) = ( .. , .. )

8) 5x + 2y = -25
5x + -2y = -5
(x,y) = ( .. , .. )

9) 6x + 6y = 0
-6x + 3y = -18
(x,y) = ( .. , .. )

10) -4x + 6y = -22
5x + -4y = 17
(x,y) = ( .. , .. )

11) -3x + 1y = -4
1x + 3y = -12
(x,y) = ( .. , .. )

12) -1x + -3y = 5
6x + -6y = 42
(x,y) = ( .. , .. )

13) 2x + -1y = -2
1x + -6y = -12
(x,y) = ( .. , .. )

14) 4x + 2y = 6
-4x + -5y = -9
(x,y) = ( .. , .. )

15) -6x + -4y = -2
-3x + 3y = 9
(x,y) = ( .. , .. )

16) 3x + -2y = -4
-2x + -5y = -10
(x,y) = ( .. , .. )

17) 3x + 1y = -4
-2x + -3y = 12
(x,y) = ( .. , .. )

18) -5x + 1y = -18
-6x + 4y = -16
(x,y) = ( .. , .. )

19) -6x + -6y = -12
4x + -4y = -8
(x,y) = ( .. , .. )

20) 4x + 1y = -21
-4x + 3y = 1
(x,y) = ( .. , .. )