The Sum Of Two Numbers Is 31 And Their Difference Is 26
The problem given says that 2 unknown numbers are given, whose sum is equal to 31 and the difference is 26. Let's find the two numbers :When we add the two numbers :
X + Y = 31
The difference of two numbers :
X - Y = 26
Solution :
If we add the two equations eachother , then we can find the first number.
X + Y = 31 X - Y = 26 2X = 57 |
Let's divide 57 to 2 for the first number "X" .
X/2 = 28.5
First number is 28.5
X + Y = 31
So ;
28.5 + Y = 31
Y = 31 - 28.5
Y = 2.5
Second number is 2.5
Question & Answer
The Sum Of Two Numbers Is 31 And Their Difference Is 26 : 28.5 And 2.5