The equation −3x−9=−21
is solved as follows. Supply the correct numbers to complete the solution.
To solve the equation -3x - 9 = -21, you need to isolate the variable x. Here's how you can solve it step by step:
1. Start by adding 9 to both sides of the equation to get rid of the -9 on the left side:
-3x - 9 + 9 = -21 + 9
Simplifying this equation gives: -3x = -12
2. Next, divide both sides of the equation by -3 to solve for x. When you divide a negative number by a negative number, the signs cancel out and become positive:
(-3x)/(-3) = (-12)/(-3)
Simplifying further gives: x = 4
Therefore, the solution to the equation -3x - 9 = -21 is x = 4.
To solve the equation -3x - 9 = -21, we need to isolate the variable x.
To do this, we can start by adding 9 to both sides of the equation:
-3x - 9 + 9 = -21 + 9
Simplifying both sides gives us:
-3x = -12
To isolate x, we can divide both sides of the equation by -3:
(-3x) / -3 = (-12) / -3
Simplifying gives us:
x = 4
So the solution to the equation -3x - 9 = -21 is x = 4.
To solve the equation −3x − 9 = −21, we need to isolate x on one side of the equation. Here are the steps:
Step 1: Start with the given equation: −3x − 9 = −21
Step 2: Add 9 to both sides of the equation to get rid of the constant term on the left side: −3x − 9 + 9 = −21 + 9
Simplifying both sides gives: −3x = -12
Step 3: Divide both sides of the equation by −3 to solve for x: (-3x)/-3 = -12/-3
Simplifying further gives: x = 4
Therefore, the solution to the equation −3x − 9 = −21 is x = 4.