SOLUTION: 2x+y=9 4X-y=-15 Solve by sub.

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Question 945326: 2x+y=9
4X-y=-15
Solve by sub.
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
2x+y=9 --> y = 9 - 2x
4X-y=-15
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Sub for y in the 2nd equation.