SOLUTION: Write a system of linear equations. the sum of two number is 3. Their difference is 1. Find numbers

Algebra ->  Coordinate Systems and Linear Equations  -> Linear Equations and Systems Word Problems -> SOLUTION: Write a system of linear equations. the sum of two number is 3. Their difference is 1. Find numbers      Log On


   

Question 583845: Write a system of linear equations.
the sum of two number is 3. Their difference is 1. Find numbers
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
Write a system of linear equations.
the sum of two number is 3.
x + y = 3
Their difference is 1. Find numbers
x-y = 1
----
Add the two equations and solve for "x":
2x = 4
x = 2
-----
Solve for "y":
x + y = 3
2 + y = 3
y = 1
-----------
Solution: (2,1)
==================
Cheers,
Stan H.
==================