The Sum Of Two Numbers Is 20 And Their Difference Is 12
The problem given says that 2 unknown numbers are given, whose sum is equal to 20 and the difference is 12. Let's find the two numbers :When we add the two numbers :
X + Y = 20
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 = 20 X - Y = 12 2X = 32 |
Let's divide 32 to 2 for the first number "X" .
X/2 = 16
First number is 16
X + Y = 20
So ;
16 + Y = 20
Y = 20 - 16
Y = 4
Second number is 4
Question & Answer
The Sum Of Two Numbers Is 20 And Their Difference Is 12 : 16 And 4