Question

What is the coefficient of 1/3b -1/3?

Answer 1

There are different types of coefficients, it is not clear which you mean?

We could ask -
"What is the numerical coefficient in `1/3b ?" "rarr 1/3`

What is the coefficient of `b`?
In this case there is only one other factor in the `b` term `rarr 1/3`
The coefficient of `1/3 rarr (b+1)`

Here is another example to illustrate coefficients.

In `3x^2ycolor(white)(xxxxxxxx) ( 3 xx x xx x xx y)`

`3` is the numerical coefficient - the number part.

`3x^2y` is the literal coefficient - the letter (variable) part#

`3xy` is the coefficient of `x`

`3y` is the coefficient of `x^2`

`3x` is the coefficient of `xy`

`3x^2` is the coefficient of y#