
The sum of two numbers is 74 and their difference is 7. 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 74. In other words, x plus y equals 74 and can be written as equation A:
x + y = 74
The difference between x and y is 7. In other words, x minus y equals 7 and can be written as equation B:
x - y = 7
Now solve equation B for x to get the revised equation B:
x - y = 7
x = 7 + y
Then substitute x in equation A from the revised equation B and then solve for y:
x + y = 74
7 + y + y = 74
7 + 2y = 74
2y = 67
y = 33.5
Now we know y is 33.5. Which means that we can substitute y for 33.5 in equation A and solve for x:
x + y = 74
x + 33.5 = 74
X = 40.5
Summary: The sum of two numbers is 74 and their difference is 7. What are the two numbers? Answer: 40.5 and 33.5 as proven here:
Sum: 40.5 + 33.5 = 74
Difference: 40.5 - 33.5 = 7
Sum Difference Calculator
Do you want the answer to a similar problem? Enter the sum and difference here to find the two numbers:
The Sum of Two Numbers is 74 and Their Difference is 8
Using what you learned on this page, try to figure out the next problem on our list and then go here to check the answer.
Copyright | Privacy Policy | Disclaimer | Contact