The Sum Of Two Numbers Is 57 And Their Difference Is 19

The problem given says that 2 unknown numbers are given, whose sum is equal to 57 and the difference is 19. Let's find the two numbers :

When we add the two numbers :
X + Y = 57

The difference of two numbers :
X - Y = 19

Solution :

If we add the two equations eachother , then we can find the first number.

X + Y = 57
X - Y = 19

2X = 76

Let's divide 76 to 2 for the first number "X" .

X/2 = 38

First number is 38

X + Y = 57
So ;
38 + Y = 57
Y = 57 - 38
Y = 19

Second number is 19

Question & Answer
The Sum Of Two Numbers Is 57 And Their Difference Is 19 : 38 And 19