The Sum Of Two Numbers Is 84 And Their Difference Is 28
The problem given says that 2 unknown numbers are given, whose sum is equal to 84 and the difference is 28. Let's find the two numbers :When we add the two numbers :
X + Y = 84
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 = 84 X - Y = 28 2X = 112 |
Let's divide 112 to 2 for the first number "X" .
X/2 = 56
First number is 56
X + Y = 84
So ;
56 + Y = 84
Y = 84 - 56
Y = 28
Second number is 28
Question & Answer
The Sum Of Two Numbers Is 84 And Their Difference Is 28 : 56 And 28