What is the simplified version of - 3 (x-7)

-3x+21

Step-by-step explanation:

Using distributive property

(-3*x) - (-3*7)

-3x - (-21)

-3x+21

x=23

Step-by-step explanation:

You have to multiply - 3 to both the x and - 7.

that is how you get - 3x + 21. (because - 3 time - 7 = Positive 21.)

then you want to get x by itself which then you would add 3 to both sides giving you X=23.