Let's eliminate x in the system
2x-5y=-5
x+2y=11
To do this, mult. the 2nd eqn by -2:
2x-5y=-5
-x-4y=-22
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-9y= -27. This yields y = 3.
Now subst. 3 for y in either of the original equations to determine x.
Write your answer as an ordered pair: ( ? , 3).