The Sum Of Two Numbers Is 11 And Their Difference Is 7
The problem given says that 2 unknown numbers are given, whose sum is equal to 11 and the difference is 7. Let's find the two numbers :When we add the two numbers :
X + Y = 11
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 = 11 X - Y = 7 2X = 18 |
Let's divide 18 to 2 for the first number "X" .
X/2 = 9
First number is 9
X + Y = 11
So ;
9 + Y = 11
Y = 11 - 9
Y = 2
Second number is 2
Question & Answer
The Sum Of Two Numbers Is 11 And Their Difference Is 7 : 9 And 2