The Sum of Two Numbers is 29 and Their Difference is 4

The sum of two numbers is 29 and their difference is 4. 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 29. In other words, x plus y equals 29 and can be written as equation A:

x + y = 29

The difference between x and y is 4. In other words, x minus y equals 4 and can be written as equation B:

x - y = 4

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

x - y = 4
x = 4 + y

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

x + y = 29
4 + y + y = 29
4 + 2y = 29
2y = 25
y = 12.5

Now we know y is 12.5. Which means that we can substitute y for 12.5 in equation A and solve for x:

x + y = 29
x + 12.5 = 29
X = 16.5

Summary: The sum of two numbers is 29 and their difference is 4. What are the two numbers? Answer: 16.5 and 12.5 as proven here:

Sum: 16.5 + 12.5 = 29
Difference: 16.5 - 12.5 = 4

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The Sum of Two Numbers is 29 and Their Difference is 5
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