The Sum Of Two Numbers Is 12 And Their Difference Is 1

The problem given says that 2 unknown numbers are given, whose sum is equal to 12 and the difference is 1. Let's find the two numbers :

When we add the two numbers :
X + Y = 12

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 = 12
X - Y = 1

2X = 13

Let's divide 13 to 2 for the first number "X" .

X/2 = 6.5

First number is 6.5

X + Y = 12
So ;
6.5 + Y = 12
Y = 12 - 6.5
Y = 5.5

Second number is 5.5

Question & Answer
The Sum Of Two Numbers Is 12 And Their Difference Is 1 : 6.5 And 5.5