The Sum Of Two Numbers Is 71 And Their Difference Is 13
The problem given says that 2 unknown numbers are given, whose sum is equal to 71 and the difference is 13. Let's find the two numbers :When we add the two numbers :
X + Y = 71
The difference of two numbers :
X - Y = 13
Solution :
If we add the two equations eachother , then we can find the first number.
X + Y = 71 X - Y = 13 2X = 84 |
Let's divide 84 to 2 for the first number "X" .
X/2 = 42
First number is 42
X + Y = 71
So ;
42 + Y = 71
Y = 71 - 42
Y = 29
Second number is 29
Question & Answer
The Sum Of Two Numbers Is 71 And Their Difference Is 13 : 42 And 29