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:

\[ -3x - 9 = -21 \] \[ -3x = -12 \] \[ x = 4 \]