The Sum Of Two Numbers Is 58 And Their Difference Is 31

The problem given says that 2 unknown numbers are given, whose sum is equal to 58 and the difference is 31. Let's find the two numbers :

When we add the two numbers :
X + Y = 58

The difference of two numbers :
X + Y = 31

Solution :

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

X + Y = 58
X - Y = 31

2X = 89

Let's divide 89 to 2 for the first number "X" .

X/2 = 44.5

First number is 44.5

X + Y = 58
So ;
44.5 + Y = 58
Y = 58 - 44.5
Y = 13.5

Second number is 13.5

Question & Answer
The Sum Of Two Numbers Is 58 And Their Difference Is 31 : 44.5 And 13.5

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