The Sum Of Two Numbers Is 16 And Their Difference Is 7
The problem given says that 2 unknown numbers are given, whose sum is equal to 16 and the difference is 7. Let's find the two numbers :When we add the two numbers :
X + Y = 16
The difference of two numbers :
X - Y = 7
Solution :
If we add the two equations eachother , then we can find the first number.
|
X + Y = 16 X - Y = 7 2X = 23 |
Let's divide 23 to 2 for the first number "X" .
X/2 = 11.5
First number is 11.5
X + Y = 16
So ;
11.5 + Y = 16
Y = 16 - 11.5
Y = 4.5
Second number is 4.5
Question & Answer
The Sum Of Two Numbers Is 16 And Their Difference Is 7 : 11.5 And 4.5