Question 592457
3x+y=-4
y=-3x-4
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5x+6y=-11
5x+6(-3x-4)=-11
5x-18x-24=-11
-13x=-11+24
-13x=13
x=13/-13
x=-1
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5*-1+6y=-11
-5+6y=-11
6y=-11+5
6y=-6
y=-6/6
y=-1
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3*-1-1=-4
-3-1=-4
You do the rest