SOLUTION: 2x+y=1 x-y=3

Algebra ->  Coordinate Systems and Linear Equations -> SOLUTION: 2x+y=1 x-y=3       Log On


   

Question 891787: 2x+y=1
x-y=3
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
Add the equations to get

2x+y=1
x-y=3
------
3x+0y=4


So,

3x = 4

x = 4/3


Use this to find y

2x+y=1

2(4/3)+y=1

8/3+y = 1

y = 1 - 8/3

y = 3/3 - 8/3

y = -5/3

=======================================================

The solutions are x = 4/3 and y = -5/3