The Sum Of Two Numbers Is 28 And Their Difference Is 2

The problem given says that 2 unknown numbers are given, whose sum is equal to 28 and the difference is 2. Let's find the two numbers :

When we add the two numbers :
X + Y = 28

The difference of two numbers :
X - Y = 2

Solution :

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

X + Y = 28
X - Y = 2

2X = 30

Let's divide 30 to 2 for the first number "X" .

X/2 = 15

First number is 15

X + Y = 28
So ;
15 + Y = 28
Y = 28 - 15
Y = 13

Second number is 13

Question & Answer
The Sum Of Two Numbers Is 28 And Their Difference Is 2 : 15 And 13