The Sum Of Two Numbers Is 89 And Their Difference Is 29

The problem given says that 2 unknown numbers are given, whose sum is equal to 89 and the difference is 29. Let's find the two numbers :

When we add the two numbers :
X + Y = 89

The difference of two numbers :
X - Y = 29

Solution :

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

X + Y = 89
X - Y = 29

2X = 118

Let's divide 118 to 2 for the first number "X" .

X/2 = 59

First number is 59

X + Y = 89
So ;
59 + Y = 89
Y = 89 - 59
Y = 30

Second number is 30

Question & Answer
The Sum Of Two Numbers Is 89 And Their Difference Is 29 : 59 And 30