The Sum of Two Numbers is 37 and Their Difference is 5

The sum of two numbers is 37 and their difference is 5. What are the two numbers? Let's start by calling the two numbers we are looking for x and y.

The sum of x and y is 37. In other words, x plus y equals 37 and can be written as equation A:

x + y = 37

The difference between x and y is 5. In other words, x minus y equals 5 and can be written as equation B:

x - y = 5

Now solve equation B for x to get the revised equation B:

x - y = 5
x = 5 + y

Then substitute x in equation A from the revised equation B and then solve for y:

x + y = 37
5 + y + y = 37
5 + 2y = 37
2y = 32
y = 16

Now we know y is 16. Which means that we can substitute y for 16 in equation A and solve for x:

x + y = 37
x + 16 = 37
X = 21

Summary: The sum of two numbers is 37 and their difference is 5. What are the two numbers? Answer: 21 and 16 as proven here:

Sum: 21 + 16 = 37
Difference: 21 - 16 = 5

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