The Sum Of Two Numbers Is 39 And Their Difference Is 12
The problem given says that 2 unknown numbers are given, whose sum is equal to 39 and the difference is 12. Let's find the two numbers :When we add the two numbers :
X + Y = 39
The difference of two numbers :
X - Y = 12
Solution :
If we add the two equations eachother , then we can find the first number.
|
X + Y = 39 X - Y = 12 2X = 51 |
Let's divide 51 to 2 for the first number "X" .
X/2 = 25.5
First number is 25.5
X + Y = 39
So ;
25.5 + Y = 39
Y = 39 - 25.5
Y = 13.5
Second number is 13.5
Question & Answer
The Sum Of Two Numbers Is 39 And Their Difference Is 12 : 25.5 And 13.5