SOLUTION: Solve system by elimination: 3x-2y=-1 3x-4y=9

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Question 249937: Solve system by elimination:
3x-2y=-1
3x-4y=9
Answer by checkley77(12844) About Me  (Show Source):
You can put this solution on YOUR website!
3x-2y=-1
-(3x-4y=9) subtract
-----------------
2y=-10
y=-10/2
y=-5 ans.
3x-2*-5=-1
3x+10=-1
3x=-1-10
3x=-11
x=-11/3 ans.
Proof:
3*-11/3-4*-5=9
-11+20=9
9=9