The Sum Of Two Numbers Is 47 And Their Difference Is 31
The problem given says that 2 unknown numbers are given, whose sum is equal to 47 and the difference is 31. Let's find the two numbers :When we add the two numbers :
X + Y = 47
The difference of two numbers :
X - Y = 31
Solution :
If we add the two equations eachother , then we can find the first number.
X + Y = 47 X - Y = 31 2X = 78 |
Let's divide 78 to 2 for the first number "X" .
X/2 = 39
First number is 39
X + Y = 47
So ;
39 + Y = 47
Y = 47 - 39
Y = 8
Second number is 8
Question & Answer
The Sum Of Two Numbers Is 47 And Their Difference Is 31 : 39 And 8