Posted by **Keaton** on Thursday, March 26, 2009 at 10:37pm.

I have tried these problem cannot get the answer so could some one help me.

Solve by the subsitution method.

2x-7y=-11

2x +17=y

What is the solution of the system.

- alegbra -
**Keaton**, Thursday, March 26, 2009 at 11:18pm
I have tried to work those problem all I ask is for your help

- alegbra -
**Reiny**, Friday, March 27, 2009 at 8:19am
the second equation tells you exactly what y is

y = 2x+17

put that into the first:

2x - 7(2x+17) = -11

I am sure you can finish that.

Once you have the x, sub that back into your

y = 2x + 17

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