The Sum Of Two Numbers Is 31 And Their Difference Is 25
The problem given says that 2 unknown numbers are given, whose sum is equal to 31 and the difference is 25. Let's find the two numbers :When we add the two numbers :
X + Y = 31
The difference of two numbers :
X - Y = 25
Solution :
If we add the two equations eachother , then we can find the first number.
X + Y = 31 X - Y = 25 2X = 56 |
Let's divide 56 to 2 for the first number "X" .
X/2 = 28
First number is 28
X + Y = 31
So ;
28 + Y = 31
Y = 31 - 28
Y = 3
Second number is 3
Question & Answer
The Sum Of Two Numbers Is 31 And Their Difference Is 25 : 28 And 3