Respuesta :

Step-by-step explanation:

(1) x+10y=20, x=20,y=2

(2) 6x+y=-18, x=-3,y=-18

(3) 2x-9y=-36, x=-18,y=4

(4) x=-6,y=-15

(5) x=9,y=12

(6) x=-18,y=-3

(7) x=16,y=-6

(8) x=14,y=8

(9) x=-12,y=9

(10) x=-15,y=-6

(11) x=12,y=10

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