The Sum Of Two Numbers Is 67 And Their Difference Is 9

The problem given says that 2 unknown numbers are given, whose sum is equal to 67 and the difference is 9. Let's find the two numbers :

When we add the two numbers :
X + Y = 67

The difference of two numbers :
X + Y = 9

Solution :

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

X + Y = 67
X - Y = 9

2X = 76

Let's divide 76 to 2 for the first number "X" .

X/2 = 38

First number is 38

X + Y = 67
So ;
38 + Y = 67
Y = 67 - 38
Y = 29

Second number is 29

Question & Answer
The Sum Of Two Numbers Is 67 And Their Difference Is 9 : 38 And 29

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