SOLUTION: Solve each of the systems by addition. If a unique solution does not exist, state whether the system is inconsistent or dependent. x + 5y = 10 -2x - 10y = -20 Thanks for any

Algebra ->  Coordinate Systems and Linear Equations  -> Lessons -> SOLUTION: Solve each of the systems by addition. If a unique solution does not exist, state whether the system is inconsistent or dependent. x + 5y = 10 -2x - 10y = -20 Thanks for any       Log On


   

Question 67481: Solve each of the systems by addition. If a unique solution does not exist, state whether the system is inconsistent or dependent.
x + 5y = 10
-2x - 10y = -20
Thanks for any help you can provide.
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
1st: x + 5y = 10
2nd: -2x - 10y = -20
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Multiply 1st be 2 to get:
3rd: 2x+10y=20
Add 2nd and 3rd to get:
0=0
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Conclusion: the system is dependent.
Cheers,
Stan H.