The Sum Of Two Numbers Is 49 And Their Difference Is 7
The problem given says that 2 unknown numbers are given, whose sum is equal to 49 and the difference is 7. Let's find the two numbers :When we add the two numbers :
X + Y = 49
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 = 49 X - Y = 7 2X = 56 |
Let's divide 56 to 2 for the first number "X" .
X/2 = 28
First number is 28
X + Y = 49
So ;
28 + Y = 49
Y = 49 - 28
Y = 21
Second number is 21
Question & Answer
The Sum Of Two Numbers Is 49 And Their Difference Is 7 : 28 And 21