SOLUTION: Hi! I have to find the point of intersection between these two lines: x-y=3 and -2x+y=-5. I have tried substitution, but that did not work, and elimination seems like it would not

Algebra ->  Linear-equations -> SOLUTION: Hi! I have to find the point of intersection between these two lines: x-y=3 and -2x+y=-5. I have tried substitution, but that did not work, and elimination seems like it would not       Log On


   

Question 1073936: Hi! I have to find the point of intersection between these two lines: x-y=3 and -2x+y=-5. I have tried substitution, but that did not work, and elimination seems like it would not work. Thank you!
Found 2 solutions by ikleyn, MathTherapy:
Answer by ikleyn(52855) About Me  (Show Source):
You can put this solution on YOUR website!
.
Don't panic !

Everything works.

Elimination works.

Substitution works.

Add the two equations (both sides) and see what will happen.


Answer by MathTherapy(10556) About Me  (Show Source):
You can put this solution on YOUR website!

Hi! I have to find the point of intersection between these two lines: x-y=3 and -2x+y=-5. I have tried substitution, but that did not work, and elimination seems like it would not work. Thank you!
You've tried both, and you claim that they don't work. I disagree! 

Don't you think it'd be a good idea to reveal your solution(s), so someone can tell you where you are going wrong? Think about it!!