Question

x-y=1
x+y=3

Answer 1

You can solve this in four steps:

- Get x in terms of y (from the first equation).
- Plug in for x in the second equation and solve for y.
- Plug the value of y back into the x in terms of y, and find the value of x.
- Plug into both original equations and double-check that the results make sense.

Hope that helps :)

Answer 2

still confused. can you show me with this problem so i can work on the rest i have to do please

Answer 3

use elimination.

1(x-y=1)
-1(x+y=3)

1x-1y= 1
-1x-1y=-3
----------
-2y=-2
-- --
-2 -2

y=0

go back to the original problem now.
x-y=1
x-0=1
1-0=1

x=1