The equation −3x−9=−21 is solved as follows. Supply the correct numbers to complete the solution.
-3x - 9 = -21
-3x=__ add 9 to both sides.
x=__ divide both sides by -3
1. -12 and 4
2. -25 and -2.5
3. 2
4. -5 and -3
5. -0.36 and -1.5
:3 have a good night sleep
To solve the equation -3x - 9 = -21, we can follow these steps:
1. Add 9 to both sides of the equation:
-3x - 9 + 9 = -21 + 9
-3x = -12
2. Divide both sides by -3 to solve for x:
-3x/-3 = -12/-3
x = 4
Therefore, the correct numbers to complete the solution are:
-3x = -12
x = 4
-3x + 9 = -21 + 9
-3x = -12
Dividing both sides by -3:
x = 4
To solve the equation -3x - 9 = -21, follow these steps:
Step 1: Add 9 to both sides of the equation to eliminate the constant term on the left side.
-3x - 9 + 9 = -21 + 9
Simplifying the left side: -3x
Simplifying the right side: -21 + 9 = -12
So, the equation becomes: -3x = -12
Step 2: Divide both sides of the equation by -3 to isolate the variable x.
(-3x) / -3 = (-12) / -3
Simplifying the left side: -3x / -3 = x
Simplifying the right side: -12 / -3 = 4
So, the equation becomes: x = 4
Therefore, the solution to the equation -3x - 9 = -21 is x = 4.
The equation 10x+13=−12 is solved as follows. Supply the correct numbers to complete the solution.(1 point)
10x+13=−12
10x=
Subtract 13 from both sides.
x=
Divide both sides by 10.