SOLUTION: I am totally lost please help. Solving by substitution or elimination 2x+y=6 x-y=3

Algebra ->  Equations -> SOLUTION: I am totally lost please help. Solving by substitution or elimination 2x+y=6 x-y=3      Log On


   

Question 410763: I am totally lost please help. Solving by substitution or elimination
2x+y=6
x-y=3
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
Basic outline:

Add the two equations to get:

2x+y=6
x-y=3
------
3x+0y=9


which gives us the new equation 3x=9


Next solve for x. Once you have the solution for x, use it to find y. You do this by plugging that value of x into either equation and solving for y.