SOLUTION: Solve by setting up the proper equation to describe the facts given and then carrying out the mathematical calculations to solve for the unknown variable(s). The sum of two numbe

Algebra ->  Coordinate Systems and Linear Equations -> SOLUTION: Solve by setting up the proper equation to describe the facts given and then carrying out the mathematical calculations to solve for the unknown variable(s). The sum of two numbe      Log On


   



Question 143844: Solve by setting up the proper equation to describe the facts given and then carrying out the mathematical calculations to solve for the unknown variable(s).
The sum of two numbers is 36. Their difference is 4. Determine the two unknown numbers.

Answer by checkley77(12844) About Me  (Show Source):
You can put this solution on YOUR website!
X+Y=36
X-Y=4
X=Y+4
(Y+4)+Y=36
2Y+4=36
2Y=36-4
2Y=32
Y=16 ANSWER.
X-16=4
X=4+16
X=20 ANSWER.
PROOF:
16+20=36
36=36