The Sum Of Two Numbers Is 89 And Their Difference Is 15

The problem given says that 2 unknown numbers are given, whose sum is equal to 89 and the difference is 15. Let's find the two numbers :

When we add the two numbers :
X + Y = 89

The difference of two numbers :
X - Y = 15

Solution :

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

X + Y = 89
X - Y = 15

2X = 104

Let's divide 104 to 2 for the first number "X" .

X/2 = 52

First number is 52

X + Y = 89
So ;
52 + Y = 89
Y = 89 - 52
Y = 37

Second number is 37

Question & Answer
The Sum Of Two Numbers Is 89 And Their Difference Is 15 : 52 And 37