The Sum Of Two Numbers Is 13 And Their Difference Is 4
The problem given says that 2 unknown numbers are given, whose sum is equal to 13 and the difference is 4. Let's find the two numbers :When we add the two numbers :
X + Y = 13
The difference of two numbers :
X - Y = 4
Solution :
If we add the two equations eachother , then we can find the first number.
|
X + Y = 13 X - Y = 4 2X = 17 |
Let's divide 17 to 2 for the first number "X" .
X/2 = 8.5
First number is 8.5
X + Y = 13
So ;
8.5 + Y = 13
Y = 13 - 8.5
Y = 4.5
Second number is 4.5
Question & Answer
The Sum Of Two Numbers Is 13 And Their Difference Is 4 : 8.5 And 4.5