The Sum Of Two Numbers Is 81 And Their Difference Is 29
The problem given says that 2 unknown numbers are given, whose sum is equal to 81 and the difference is 29. Let's find the two numbers :When we add the two numbers :
X + Y = 81
The difference of two numbers :
X - Y = 29
Solution :
If we add the two equations eachother , then we can find the first number.
|
X + Y = 81 X - Y = 29 2X = 110 |
Let's divide 110 to 2 for the first number "X" .
X/2 = 55
First number is 55
X + Y = 81
So ;
55 + Y = 81
Y = 81 - 55
Y = 26
Second number is 26
Question & Answer
The Sum Of Two Numbers Is 81 And Their Difference Is 29 : 55 And 26