The Sum Of Two Numbers Is 87 And Their Difference Is 23

The problem given says that 2 unknown numbers are given, whose sum is equal to 87 and the difference is 23. Let's find the two numbers :

When we add the two numbers :
X + Y = 87

The difference of two numbers :
X - Y = 23

Solution :

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

X + Y = 87
X - Y = 23

2X = 110

Let's divide 110 to 2 for the first number "X" .

X/2 = 55

First number is 55

X + Y = 87
So ;
55 + Y = 87
Y = 87 - 55
Y = 32

Second number is 32

Question & Answer
The Sum Of Two Numbers Is 87 And Their Difference Is 23 : 55 And 32

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