the equation -3x-9=-21 is solved as follows. supply the correct numbers to complete the solution -3x = __ add 9 to both sides x= __ divide both sides by -3
The equation -3x - 9 = -21 can be solved as follows:
-3x = -21 + 9 (add 9 to both sides)
-3x = -12 (simplify)
x = -12 / -3 (divide both sides by -3)
The correct numbers to complete the solution are:
-3x = -12
x = 4
To solve the equation -3x-9=-21, we will follow the steps given:
1. Add 9 to both sides of the equation to isolate the term with 'x' on one side:
-3x - 9 + 9 = -21 + 9
-3x = -12
Therefore, -3x equals -12.
2. To find the value of 'x', we need to divide both sides of the equation by -3:
(-3x)/(-3) = (-12)/(-3)
x = 4
Therefore, the value of 'x' is 4.
So, the completed solution is:
-3x = -12
x = 4
To solve the equation -3x - 9 = -21, we need to isolate the variable x.
1. Start by adding 9 to both sides of the equation to get rid of the -9 on the left-hand side:
-3x - 9 + 9 = -21 + 9
Simplifying, we have:
-3x = -12
2. Now, we need to solve for x. To do this, divide both sides of the equation by -3:
(-3x) / -3 = (-12) / -3
Simplifying further, we get:
x = 4
So, the solution to the equation is x = 4.
To complete the solution, we have:
-3x = -12
x = 4
By following these steps, we have successfully solved the equation -3x - 9 = -21.