The difference between two numbers is 9. The first number plus twice the other number is 27 . Find two numbers

Question

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Answer 1

Hi, Lizzy -

 

You can solve this problem by creating two equations with two unknown values and then solving those equations. You can call the two unknown values anything you want. Let's call them x and y.

 

Then using the problem statement you can set up the equations.

For example, it says that the difference between the two numbers is 9. So for the first equation you have:

 

x - y = 9

 

You would then need to create a second equation based on the statement "the first number plus twice the other number is 27". The first number would be x and the second one is y.

 

Finally, you solve the two equations for x and y.