Given:
Total number of erasers = 20
Kyra kept 8 erasers and equally divided the rest among three friends.
To find:
The expression that tells about the number of erasers each friend received.
Solution:
Total number of erasers = 20
Kyra kept 8 erasers.
Number of friends = 3
Let x be the number of eraser each friend received.
Number of eraser divided amount three friends = 3x
Now,
Erasers kept by Kyra + Erasers divided amount three friends = Total erasers
[tex]8+3x=20[/tex]
[tex]3x=20-8[/tex]
Divide both sides by 3.
[tex]x=\dfrac{20-8}{3}[/tex]
It can be written as
[tex]x=(20-8)\div 3[/tex]
Therefore, the required expression is [tex](20-8)\div 3[/tex] and its value is 4.
