Question

represent the following sentence as an algebraic expression, where \a number\ is the letter x.
a number is subtracted from 3.

Explanation:

Step1: Identify the operation

The sentence says "a number (x) is subtracted from 3", which means we start with 3 and subtract x from it.

Step2: Write the algebraic expression

Using the subtraction operation, the expression is $3 - x$.

Answer:

$3 - x$