The Sum Of Two Numbers Is 45 And Their Difference Is 12
The problem given says that 2 unknown numbers are given, whose sum is equal to 45 and the difference is 12. Let's find the two numbers :When we add the two numbers :
X + Y = 45
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 = 45 X - Y = 12 2X = 57 |
Let's divide 57 to 2 for the first number "X" .
X/2 = 28.5
First number is 28.5
X + Y = 45
So ;
28.5 + Y = 45
Y = 45 - 28.5
Y = 16.5
Second number is 16.5
Question & Answer
The Sum Of Two Numbers Is 45 And Their Difference Is 12 : 28.5 And 16.5