Question

Evaluate -3x - 4x for x = -1.

Answer 1

Explanation:

To solve this equation, you put -1 in the both x's

-3 X -1 - 4 X -1

Then you solve -3 times -1 to get 3 (a negative times a negative makes a positive)

After that you solve for 4 - (-1) to get -4 (a negative times a positive makes a negative)

Then you subtract 3 from -4 to get the answer

3- (-4) = 7

Answer 2

7

Explanation:

Plug in x = -1 into the expression

-3(-1) - 4(-1)

= 3 + 4

= 7