The equation - 3x - 9 = - 21 is solved as follows. Supply the correct numbers to complete the solution. (1 point)
- 3x - 9 = - 21
- 3x = boxed -12
x =
Add 9 to both sides.
Divide both sides by -3.
To complete the solution, we need to perform the operations indicated.
-3x - 9 = -21
We isolate -3x by adding 9 to both sides:
-3x = -21 + 9
Simplifying the right side gives:
-3x = -12
Now, we divide both sides by -3 to solve for x:
x = -12 / -3
The correct numbers to complete the solution are:
x = 4