The Sum Of Two Numbers Is 89 And Their Difference Is 19

The problem given says that 2 unknown numbers are given, whose sum is equal to 89 and the difference is 19. Let's find the two numbers :

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

The difference of two numbers :
X - Y = 19

Solution :

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

X + Y = 89
X - Y = 19

2X = 108

Let's divide 108 to 2 for the first number "X" .

X/2 = 54

First number is 54

X + Y = 89
So ;
54 + Y = 89
Y = 89 - 54
Y = 35

Second number is 35

Question & Answer
The Sum Of Two Numbers Is 89 And Their Difference Is 19 : 54 And 35