The equation −3x−9=−21

Question

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

Add 9 to both sides.
x=

Divide both sides by −3
.

Answer 1

Adding 9 to both sides of the equation:

-3x - 9 + 9 = -21 + 9

-3x = -12

Dividing both sides by -3:

x = -12 / -3

x = 4

Answer 2

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.

Answer 3

Subtracting 13 from both sides of the equation:

10x + 13 - 13 = -12 - 13

10x = -25

Dividing both sides by 10:

x = -25 / 10

x = -2.5