SOLUTION: How do I solve this equation... 5x + y = 12 3x + y = 10 Do I add 5x and 3x together to get 8x? And the same with y to get 2y? I am not sure how to work these problems

Algebra ->  Coordinate Systems and Linear Equations  -> Lessons -> SOLUTION: How do I solve this equation... 5x + y = 12 3x + y = 10 Do I add 5x and 3x together to get 8x? And the same with y to get 2y? I am not sure how to work these problems      Log On


   



Question 352710: How do I solve this equation...
5x + y = 12
3x + y = 10
Do I add 5x and 3x together to get 8x? And the same with y to get 2y? I am not sure how to work these problems

Found 2 solutions by Fombitz, Alan3354:
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
No adding just gets you another equation in x and y.
Subtracting however allows you to eliminate y.
Try that and see what your result is.
Once you solve for x, use either equation to solve for y.
5x+%2B+y+-3x+-+y+=+12-10

Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
Subtract the 2nd from the 1st.