Question

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

Answer 1

To solve the equation \(-3x - 9 = -21\), we follow these steps:

1. **Add 9 to both sides** to isolate the term with \(x\):
\[
-3x - 9 + 9 = -21 + 9
\]
This simplifies to:
\[
-3x = -12
\]

2. **Divide both sides by -3** to solve for \(x\):
\[
\frac{-3x}{-3} = \frac{-12}{-3}
\]
This simplifies to:
\[
x = 4
\]

So, the completed solution steps are:

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

Thus, \(x = 4\) is the solution.