The Sum Of Two Numbers Is 55 And Their Difference Is 21
The problem given says that 2 unknown numbers are given, whose sum is equal to 55 and the difference is 21. Let's find the two numbers :When we add the two numbers :
X + Y = 55
The difference of two numbers :
X - Y = 21
Solution :
If we add the two equations eachother , then we can find the first number.
X + Y = 55 X - Y = 21 2X = 76 |
Let's divide 76 to 2 for the first number "X" .
X/2 = 38
First number is 38
X + Y = 55
So ;
38 + Y = 55
Y = 55 - 38
Y = 17
Second number is 17
Question & Answer
The Sum Of Two Numbers Is 55 And Their Difference Is 21 : 38 And 17