The equation −3x−9=−21

is solved as follows. Enter the correct numbers to complete the solution.(2 points)
−3x−9=−21

−3x=

Add 9 to both sides of the equation.

x=
Divide both sides of the equation by -3. If the answer is an improper fraction, enter the improper fraction.

1 answer

Let's solve the equation step by step:

Given: \[ -3x - 9 = -21 \]

Step 1: Add 9 to both sides of the equation. \[ -3x - 9 + 9 = -21 + 9 \] This simplifies to: \[ -3x = -12 \]

Step 2: Divide both sides of the equation by -3. \[ x = \frac{-12}{-3} \] This simplifies to: \[ x = 4 \]

So, filling in the correct numbers in the solution:

  • For the first blank (after \( -3x = \)), the answer is \(-12\).
  • For the second blank (after \( x = \)), the answer is \(4\).

Final filled solution:

  • \(-3x = -12\)
  • \(x = 4\)