One third of the difference of a number and 1.

1/3x - 1/3

Step-by-step explanation:

First off, we can write this the words as a mathematical equations so its easier to work with:

1/3 (x - 1)

Now we can use distributive property and finally simplify this equation:

1/3 (x-1)

1/3x - 1/3 x 1

1/3x - 1/3

Answer:a/3-1/3

Step-by-step explanation:

let them number be a

Difference = (a-1)

One-third Of The difference=1/3 of (a-1)

1/3 x (a-1)

Remove brackets

1/3 x a + 1/3 x - 1

a/3-1/3