The Sum Of Two Numbers Is 25 And Their Difference Is 7
The problem given says that 2 unknown numbers are given, whose sum is equal to 25 and the difference is 7. Let's find the two numbers :When we add the two numbers :
X + Y = 25
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 = 25 X - Y = 7 2X = 32 |
Let's divide 32 to 2 for the first number "X" .
X/2 = 16
First number is 16
X + Y = 25
So ;
16 + Y = 25
Y = 25 - 16
Y = 9
Second number is 9
Question & Answer
The Sum Of Two Numbers Is 25 And Their Difference Is 7 : 16 And 9