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Rudiy27
3 years ago
11

Last week Amy ran 31 miles more than Ryan. Amy ran 40 miles. How many miles did Ryan run? I have to write an equation and solve

it so please explain how to do this, thank you!
Mathematics
2 answers:
Korvikt [17]3 years ago
8 0
Variable x is ryans miles
amy-ryan=answer
40-31=x
x=9
ryan ran 9 miles
hope this helps
40-31=x is the equation
Komok [63]3 years ago
8 0
Well if Amy ran 31 miles more than Ryan, and she ran 40 miles all together, than you simply just subtract 31 from 40.  Write it on paper like this:

      40
    - 31
    -------
you cant take 1 from 0 so instead you "borrow" from the number next to it which would be the 4. you never take more than 1 from a number when borrowing. so take 1 from 4, place the 1 by the 0 now, making the 4 a 3 and 0 a 10. now you can subtract the 1 from the 10, making it a 9. then you subtract 3 from 3 and the answer you get is 9.
    
 
I hope this helped!
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