Represent the following sentence as an algebraic expression, where "a number" is the
letter x. you do not need to simplify.
7 is subtracted from seven times a number.

This sentence translates to the algebraic expression, 7x - 7

Step-by-step explanation:

Subtracted from indicates the operation subtraction, so 7 being subtracted (or "taken away") from something is algebraically translated to s - 7 where s represents something.

The directions outright says to substitute a number with the letter x.

Time indicates the operation multiplication. We all know seven is 7 written in verbal form. So, 7x (which is a less messy and cluttered way to say x · 7) is "seven times a number" written as an algebraic expression.

7x is the something 7 is subtracted from, so 7x - 7

In conclusion, 7x - 7 is 7 is subtracted from seven times a number represented as an algebraic expression.

(7*x)-7. Im just writing this rest because I need at least 20 characters. Good luck :).

if you need , reply with more info. u.