The Sum Of Two Numbers Is 39 And Their Difference Is 7
The problem given says that 2 unknown numbers are given, whose sum is equal to 39 and the difference is 7. Let's find the two numbers :When we add the two numbers :
X + Y = 39
The difference of two numbers :
X - Y = 7
Solution :
If we add the two equations eachother , then we can find the first number.
|
X + Y = 39 X - Y = 7 2X = 46 |
Let's divide 46 to 2 for the first number "X" .
X/2 = 23
First number is 23
X + Y = 39
So ;
23 + Y = 39
Y = 39 - 23
Y = 16
Second number is 16
Question & Answer
The Sum Of Two Numbers Is 39 And Their Difference Is 7 : 23 And 16