The Sum Of Two Numbers Is 79 And Their Difference Is 28
The problem given says that 2 unknown numbers are given, whose sum is equal to 79 and the difference is 28. Let's find the two numbers :When we add the two numbers :
X + Y = 79
The difference of two numbers :
X - Y = 28
Solution :
If we add the two equations eachother , then we can find the first number.
|
X + Y = 79 X - Y = 28 2X = 107 |
Let's divide 107 to 2 for the first number "X" .
X/2 = 53.5
First number is 53.5
X + Y = 79
So ;
53.5 + Y = 79
Y = 79 - 53.5
Y = 25.5
Second number is 25.5
Question & Answer
The Sum Of Two Numbers Is 79 And Their Difference Is 28 : 53.5 And 25.5