An algebraic expression use to represent the number. One third subtracted from 3

m/3

Step-by-step explanation:

13 m or m 3

Explanation:One third = 13 (the number) 'Of' = multiplication (symbol : * )

a number m = m (variable)

One third of a number m = (one third) (a number m) = (13) (a variable) = (13)

(m) = 13 m or m 3 since 13 m = m/3