Resposta:
2x-3y=-16
x-y=3 //-3
-3x+3y=-9
---------------
-x = -25
x = 25
25-y=3
-y=3-25
y = 22
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Resposta:
2x-3y=-16
x-y=3 //-3
2x-3y=-16
-3x+3y=-9
---------------
-x = -25
x = 25
---------------
25-y=3
-y=3-25
y = 22