The Sum Of Two Numbers Is 90 And Their Difference Is 22

The problem given says that 2 unknown numbers are given, whose sum is equal to 90 and the difference is 22. Let's find the two numbers :

When we add the two numbers :
X + Y = 90

The difference of two numbers :
X - Y = 22

Solution :

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

X + Y = 90
X - Y = 22

2X = 112

Let's divide 112 to 2 for the first number "X" .

X/2 = 56

First number is 56

X + Y = 90
So ;
56 + Y = 90
Y = 90 - 56
Y = 34

Second number is 34

Question & Answer
The Sum Of Two Numbers Is 90 And Their Difference Is 22 : 56 And 34