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