Question 1200484
Your other one was answered very thoroughly.  You should be able now to solve this one here and confirm for yourself.


Review your steps!
3x+5y=-11
x-2y=11
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3x+5y=-11
-3(x-2y=11
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3x+5y=-11
-3x+6y=-33
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-y=22 ************************this is a mistake.


If you ADD the two equations, then
{{{(3x+5y)+(-3x+6y)=-11+(-33)}}}
{{{11y=-44}}}
{{{y=-4}}}------and you can find the x value however way you want.