SOLUTION: The sum of two numbers is 28 and their difference is 4. What are their number?

Question 741320: The sum of two numbers is 28 and their difference is 4.
What are their number?

Found 2 solutions by richwmiller, MathLover1:
Answer by richwmiller(17219) (Show Source): You can put this solution on YOUR website!
x+y=28
x-y=4
add
2x=32
x=16
y=12

Answer by MathLover1(20850) (Show Source): You can put this solution on YOUR website!

let numbers be and
if the sum of two numbers is , we have
....eq.1
and if their difference is , we have

....eq.2
solve the system by addition:
....eq.1
....eq.2
_________________

now find
....eq.1

check:
....eq.1

....eq.2

RELATED QUESTIONS
The sum of two numbers is 28 and their difference is 4. What are the... (answered by addingup,MathTherapy)
The sum of two numbers is -4 and their difference is 6. What are the... (answered by swincher4391)
The sum of two numbers is 21 and their difference is 5. What are the... (answered by rajgahir,mananth)
The sum of two numbers is -10. Their difference is 4. What are the two numbers? (answered by Alan3354)
The sum of two numbers is 24. Their difference is 4. What are the... (answered by KMST)
The sum of two numbers is 28. Their difference is 4. What are the two numbers? thanks... (answered by CharStar)
If the sum of two numbers is 1, and their difference is 4, what are the two... (answered by jim_thompson5910)
The sum of two numbers is 18 and their difference is 4. What are the two... (answered by scott8148)
The difference of two numbers is 2, and their sum is 4. What are the two numbers? (answered by TimothyLamb)