The Sum Of Two Numbers Is 15 And Their Difference Is 1
The problem given says that 2 unknown numbers are given, whose sum is equal to 15 and the difference is 1. Let's find the two numbers :When we add the two numbers :
X + Y = 15
The difference of two numbers :
X - Y = 1
Solution :
If we add the two equations eachother , then we can find the first number.
|
X + Y = 15 X - Y = 1 2X = 16 |
Let's divide 16 to 2 for the first number "X" .
X/2 = 8
First number is 8
X + Y = 15
So ;
8 + Y = 15
Y = 15 - 8
Y = 7
Second number is 7
Question & Answer
The Sum Of Two Numbers Is 15 And Their Difference Is 1 : 8 And 7