-3x-9=21is solved as follows, supply the correct numbers to complete the solution

Answer 1

To solve the equation -3x - 9 = 21, we need to isolate the variable x.

First, let's add 9 to both sides of the equation:
-3x - 9 + 9 = 21 + 9
-3x = 30

Next, divide both sides of the equation by -3 to solve for x:
-3x/-3 = 30/-3
x = -10

So, the solution to the equation -3x - 9 = 21 is x = -10.