The Sum Of Two Numbers Is 49 And Their Difference Is 21
The problem given says that 2 unknown numbers are given, whose sum is equal to 49 and the difference is 21. Let's find the two numbers :When we add the two numbers :
X + Y = 49
The difference of two numbers :
X - Y = 21
Solution :
If we add the two equations eachother , then we can find the first number.
X + Y = 49 X - Y = 21 2X = 70 |
Let's divide 70 to 2 for the first number "X" .
X/2 = 35
First number is 35
X + Y = 49
So ;
35 + Y = 49
Y = 49 - 35
Y = 14
Second number is 14
Question & Answer
The Sum Of Two Numbers Is 49 And Their Difference Is 21 : 35 And 14