The Sum Of Two Numbers Is 30 And Their Difference Is 1

The problem given says that 2 unknown numbers are given, whose sum is equal to 30 and the difference is 1. Let's find the two numbers :

When we add the two numbers :
X + Y = 30

The difference of two numbers :
X - Y = 1

Solution :

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

X + Y = 30
X - Y = 1

2X = 31

Let's divide 31 to 2 for the first number "X" .

X/2 = 15.5

First number is 15.5

X + Y = 30
So ;
15.5 + Y = 30
Y = 30 - 15.5
Y = 14.5

Second number is 14.5

Question & Answer
The Sum Of Two Numbers Is 30 And Their Difference Is 1 : 15.5 And 14.5