The equation −3x−9=−21 is solved as follows. Supply the correct numbers to complete the solution.(1 point)

Question

−3x−9=−21
−3x=

Add 9 to both sides.
x=

Divide both sides by −3
.

Answer 1

Let's solve the equation step by step.

Starting with the equation:

$$-3x-9=-21$$

1. Add 9 to both sides:

$$-3x-9+9=-21+9$$

This simplifies to:

$$-3x=-12$$

2. Divide both sides by -3:

$$\frac{-3x}{-3}=\frac{-12}{-3}$$

This simplifies to:

$$x=4$$

So, filling in the blanks, we have:

• For the first blank: $-12$
• For the second blank: $4$

The completed solution is:

$$-3x-9=-21$$ $$-3x=-12$$ $$x=4$$