(-2x - 1) - (x - 7)

-3x - 8

To simplify the expression (-2x - 1) - (x - 7), you can start by distributing the negative sign to both terms inside the parentheses that follow it. This means that you will change the sign in front of each term within the second set of parentheses.

(-2x - 1) - (x - 7)
= -2x - 1 - x + 7

Next, you can combine the like terms by adding or subtracting coefficients of the same variable. In this case, both terms have x, so you can combine them by adding -2x and -x.

= (-2x - x) + (-1 + 7)

Combining the terms, you get:

= -3x + 6

Therefore, the simplified expression is -3x + 6.

To simplify the given expression (-2x - 1) - (x - 7), we'll first distribute the negative sign inside the parentheses to each term within the second set of parentheses. This can be done by negating each term:

(-x + 7)

Now, we can combine like terms by adding the coefficients of similar terms. In this case, we have x terms and constant terms:

-2x - x = -3x
-1 + 7 = 6

Combining these results, the simplified expression is:

-3x + 6