The Sum Of Two Numbers Is 73 And Their Difference Is 21

The problem given says that 2 unknown numbers are given, whose sum is equal to 73 and the difference is 21. Let's find the two numbers :

When we add the two numbers :
X + Y = 73

The difference of two numbers :
X - Y = 21

Solution :

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

X + Y = 73
X - Y = 21

2X = 94

Let's divide 94 to 2 for the first number "X" .

X/2 = 47

First number is 47

X + Y = 73
So ;
47 + Y = 73
Y = 73 - 47
Y = 26

Second number is 26

Question & Answer
The Sum Of Two Numbers Is 73 And Their Difference Is 21 : 47 And 26