#### Answer

Given expression: $15 - (1.5/d)$
The written phrase for the above algebraic expression is:
The difference of 15 and the quotient of 1.5 and a number "d".

#### Work Step by Step

By the given expression, we understand that the mathematic step-by-step order of the expression is:
First, take 1.5 and divide it by a number "d".
Then, subtract the result from 15.