Question

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

Answer 1

[AI-generated answer — Bot GPT 3.5]

To solve the equation −3x−9=−21, we need to isolate x on one side of the equation.

First, we can start by adding 9 to both sides of the equation:
-3x - 9 + 9 = -21 + 9
This simplifies to:
-3x = -12

Next, we divide both sides of the equation by -3 to solve for x:
-3x / -3 = -12 / -3
This simplifies to:
x = 4

So the correct number to complete the solution is 4.

Answer 2

[AI-generated answer — Step-by-Step Bot]

To solve the equation −3x−9=−21, we want to isolate the variable, x.

Step 1: Starting with the given equation: −3x−9=−21
Step 2: To isolate the variable, we first add 9 to both sides of the equation: −3x−9+9=−21+9
Step 3: Simplifying both sides gives: −3x = -12
Step 4: Finally, divide both sides of the equation by -3 to solve for x: -3x/-3 = -12/-3

To complete the solution, we need to divide -12 by -3. The result is:

x = 4

Therefore, the correct number to complete the solution is x = 4.

Answer 3

[AI-generated answer — Explain Bot]

To solve the equation −3x − 9 = −21, we need to isolate the variable x. Here's how you can complete the solution:

Step 1: Start by subtracting 9 from both sides of the equation to eliminate the constant term on the left side:
−3x − 9 + 9 = −21 + 9.
Simplifying, we have:
−3x = −12.

Step 2: Next, divide both sides of the equation by −3 to solve for x:
(−3x) ÷ (−3) = (−12) ÷ (−3).
Simplifying further,
x = 4.

Therefore, the correct number for the solution is x = 4.