SOLUTION: The difference of two numbers is 86. The second is 6 less than 5 times the first. What are the two numbers?

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Question 112068: The difference of two numbers is 86. The second is 6 less than 5 times the first. What are the two numbers?
Answer by jim_thompson5910(35256)   (Show Source): You can put this solution on YOUR website!

Start with the given system





Plug in into the first equation. In other words, replace each with . Notice we've eliminated the variables. So we now have a simple equation with one unknown.


Distribute


Combine like terms on the left side


Add 6 to both sides


Combine like terms on the right side


Divide both sides by 4 to isolate x



Divide




Now that we know that , we can plug this into to find



Substitute for each


Simplify


So our answer is and

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