SOLUTION: please solve. 2x+3xy=8;x=-2 i got positive 6 for an answer. what did you guys get?

Algebra ->  Equations -> SOLUTION: please solve. 2x+3xy=8;x=-2 i got positive 6 for an answer. what did you guys get?      Log On


   

Question 206507: please solve.

2x+3xy=8;x=-2

i got positive 6 for an answer. what did you guys get?
Found 2 solutions by jim_thompson5910, rfer:
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
2x%2B3xy=8 Start with the given equation.


2%28-2%29%2B3%28-2%29y=8 Plug in x=-2


-4-6y=8 Multiply


-6y=8%2B4 Add 4 to both sides.


-6y=12 Combine like terms on the right side.


y=%2812%29%2F%28-6%29 Divide both sides by -6 to isolate y.


y=-2 Reduce.


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Answer:

So the solution is y=-2

Answer by rfer(16322) About Me  (Show Source):
You can put this solution on YOUR website!
2x+3xy+8
2(-2)+3(-2)(y)=8
-4-6y=8
-6y=8+4
-y=2
y=-2
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Proof
2(-2)+3(-2)(-2)=8
-4+12=8