The Sum Of Two Numbers Is 42 And Their Difference Is 30
The problem given says that 2 unknown numbers are given, whose sum is equal to 42 and the difference is 30. Let's find the two numbers :When we add the two numbers :
X + Y = 42
The difference of two numbers :
X - Y = 30
Solution :
If we add the two equations eachother , then we can find the first number.
X + Y = 42 X - Y = 30 2X = 72 |
Let's divide 72 to 2 for the first number "X" .
X/2 = 36
First number is 36
X + Y = 42
So ;
36 + Y = 42
Y = 42 - 36
Y = 6
Second number is 6
Question & Answer
The Sum Of Two Numbers Is 42 And Their Difference Is 30 : 36 And 6