SOLUTION: The sum of two numbers is 19, their difference is 5,find the number

Question 706803: The sum of two numbers is 19, their difference is 5,find the number
Found 2 solutions by Alan3354, MathLover1:
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
The sum of two numbers is 19, their difference is 5,find the number
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q + r = 19
q - r = 5
-------------- Add

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

if their difference is , we have .....eq.2
to find the number, solve this system:
..eq.1
.....eq.2
________________________
..eq.1..solve for
....eq.1a....substitute in eq.2

.....eq.2...solve for

or

go back to eq. 1a and find
....eq.1a

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