To solve the equation -3x - 9 = -21, we need to isolate the variable x.
First, we will 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,
-3x = -12
Next, we divide both sides of the equation by -3 to solve for x:
(-3x)/(-3) = (-12)/(-3)
Simplifying,
x = 4
Therefore, the solution to the equation -3x - 9 = -21 is x = 4.
the equation −3x−9=−21 is solved as follows. Supply the correct numbers to complete the solution.
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