SOLUTION: x+y=8 x-y=6

Algebra ->  Linear-equations -> SOLUTION: x+y=8 x-y=6       Log On


   



Question 1009761: x+y=8
x-y=6

Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
The given system of equations is
x+y = 8
x-y = 6

Add up the equations
x+y = 8
x-y = 6
--------
2x+0y = 14

that turns into

2x = 14


Now solve for x
2x = 14
2x/2 = 14/2
x = 7

Then use this to find y
x+y = 8
7+y = 8
7+y-7 = 8-7
y = 1

So x = 7 and y = 1 which is the ordered pair (x,y) = (7,1)

If you were to graph the two equations, you'll see that the two lines cross at the point (7,1), which is the solution to the system of equations.