The Sum Of Two Numbers Is 39 And Their Difference Is 11

The problem given says that 2 unknown numbers are given, whose sum is equal to 39 and the difference is 11. Let's find the two numbers :

When we add the two numbers :
X + Y = 39

The difference of two numbers :
X - Y = 11

Solution :

If we add the two equations eachother , then we can find the first number.

X + Y = 39
X - Y = 11

2X = 50

Let's divide 50 to 2 for the first number "X" .

X/2 = 25

First number is 25

X + Y = 39
So ;
25 + Y = 39
Y = 39 - 25
Y = 14

Second number is 14

Question & Answer
The Sum Of Two Numbers Is 39 And Their Difference Is 11 : 25 And 14