The equation -3x

Question

- 9 =
- 21 is solved as follows. Supply the correct numbers to complete the solution.1 pl

Answer 1

The equation -3x - 9 = -21 is solved as follows:

-3x - 9 = -21
-3x = -21 + 9 (adding 9 to both sides)
-3x = -12
x = -12 / -3 (dividing both sides by -3)
x = 4

So the correct number to complete the solution is 4.