The equation −3x−9=−21 is solved as follows. Supply the correct numbers to complete the solution.(1 point)
To solve the equation −3x − 9 = −21, we want to isolate the variable x on one side of the equation. We can do this by performing various operations to both sides of the equation.
First, let's add 9 to both sides of the equation:
−3x − 9 + 9 = −21 + 9
Simplifying, we have:
−3x = −12
Next, let's divide both sides of the equation by −3 to solve for x:
−3x/−3 = −12/−3
Simplifying, we get:
x = 4
Therefore, x equals 4.
To solve the equation −3x − 9 = −21, we need to isolate the variable x.
Step 1: Subtract 9 from both sides:
-3x - 9 + 9 = -21 + 9
-3x = -12
Step 2: Divide both sides by -3:
-3x / -3 = -12 / -3
x = 4
Therefore, the correct numbers to complete the solution are:
Step 1: Subtract 9 from both sides: -3x - 9 + 9 = -21 + 9
Step 2: Divide both sides by -3: -3x / -3 = -12 / -3
Final step: x = 4
To solve the equation −3x−9=−21, you can follow these steps:
Step 1: Start by isolating the variable term (-3x) on one side of the equation. In this case, you can do that by adding 9 to both sides of the equation. This will leave you with:
−3x − 9 + 9 = −21 + 9
−3x = -12
Step 2: Divide both sides of the equation by -3 to solve for x. This will give you the value of x:
−3x / -3 = -12 / -3
x = 4
So, the solution to the equation −3x−9=−21 is x = 4.