The Sum Of Two Numbers Is 47 And Their Difference Is 21
The problem given says that 2 unknown numbers are given, whose sum is equal to 47 and the difference is 21. Let's find the two numbers :When we add the two numbers :
X + Y = 47
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 = 47 X - Y = 21 2X = 68 |
Let's divide 68 to 2 for the first number "X" .
X/2 = 34
First number is 34
X + Y = 47
So ;
34 + Y = 47
Y = 47 - 34
Y = 13
Second number is 13
Question & Answer
The Sum Of Two Numbers Is 47 And Their Difference Is 21 : 34 And 13