The equation −3x−9=−21

Question

is solved as follows. Supply the correct numbers to complete the solution.(1 point)
−3x−9=−21
−3x= ___Add 9 to both sides.
x=___ Divide both sides by −3
.

Answer 1

To solve the equation \( -3x - 9 = -21 \), we can follow the steps as outlined. Let's fill in the blanks:

1. Start with the original equation: \[ -3x - 9 = -21 \]

2. Add 9 to both sides: \[ -3x = -21 + 9 \] Solving that gives: \[ -3x = -12 \]

3. Now divide both sides by -3: \[ x = \frac{-12}{-3} \] This simplifies to: \[ x = 4 \]

So, the filled-in steps would be:

1. \( -3x = -12 \) (Add 9 to both sides)
2. \( x = 4 \) (Divide both sides by -3)