The Sum Of Two Numbers Is 13 And Their Difference Is 9
The problem given says that 2 unknown numbers are given, whose sum is equal to 13 and the difference is 9. Let's find the two numbers :When we add the two numbers :
X + Y = 13
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 = 13 X - Y = 9 2X = 22 |
Let's divide 22 to 2 for the first number "X" .
X/2 = 11
First number is 11
X + Y = 13
So ;
11 + Y = 13
Y = 13 - 11
Y = 2
Second number is 2
Question & Answer
The Sum Of Two Numbers Is 13 And Their Difference Is 9 : 11 And 2