The Sum Of Two Numbers Is 73 And Their Difference Is 13

The problem given says that 2 unknown numbers are given, whose sum is equal to 73 and the difference is 13. Let's find the two numbers :

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

The difference of two numbers :
X - Y = 13

Solution :

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

X + Y = 73
X - Y = 13

2X = 86

Let's divide 86 to 2 for the first number "X" .

X/2 = 43

First number is 43

X + Y = 73
So ;
43 + Y = 73
Y = 73 - 43
Y = 30

Second number is 30

Question & Answer
The Sum Of Two Numbers Is 73 And Their Difference Is 13 : 43 And 30