SOLUTION: Please help. Solve the following system by addition. If a unique solution does not exist, state whether the system is inconsistent or dependent. x + 5y = 10 - 2x - 10y

Algebra ->  Coordinate Systems and Linear Equations  -> Linear Equations and Systems Word Problems -> SOLUTION: Please help. Solve the following system by addition. If a unique solution does not exist, state whether the system is inconsistent or dependent. x + 5y = 10 - 2x - 10y      Log On


   

Question 112455: Please help.
Solve the following system by addition. If a unique solution does not exist, state whether the system is inconsistent or dependent.
x + 5y = 10
- 2x - 10y = - 20
Thanks
JMS
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
1.+++x+%2B++5y+=+++10
2.-+2x+-+10y+=+-+20
if you multiply both sides of equation 1 by -2,
1.++-2x+%2B++%28-10y%29=+++-20
you get equation 2.
These are dependent equations (the same equation).