The Sum Of Two Numbers Is 83 And Their Difference Is 20
The problem given says that 2 unknown numbers are given, whose sum is equal to 83 and the difference is 20. Let's find the two numbers :When we add the two numbers :
X + Y = 83
The difference of two numbers :
X - Y = 20
Solution :
If we add the two equations eachother , then we can find the first number.
|
X + Y = 83 X - Y = 20 2X = 103 |
Let's divide 103 to 2 for the first number "X" .
X/2 = 51.5
First number is 51.5
X + Y = 83
So ;
51.5 + Y = 83
Y = 83 - 51.5
Y = 31.5
Second number is 31.5
Question & Answer
The Sum Of Two Numbers Is 83 And Their Difference Is 20 : 51.5 And 31.5