Select the correct answer.

What is the justification for step 3 in the solution process?

10d - 5 = 4d - 15 - 3d

Step 1: 10d - 5 = d - 15

Step 2: 9d - 5 = - 15

Step 3: 9d = - 10

A.

the subtraction property of equality

B.

the multiplication property of equality

C.

the division property of equality

D.

the addition property of equality

Pretty sure it's C. The division property of equality.

Because on the last step, you divide 9d by 9, to get d. And you also have to divide the other side by 9.

D.

the addition property of equality

Step-by-step explanation:

Given the expression in

Step 2: 9d - 5 = - 15

The addition property of equality was used to get step 3.

That is

9d - 5 = - 15

Move - 5 over the equality sign and it becomes + 5

9d = - 15 + 5

9d = - 10

OR add 5 to both sides of the equation as shown below

9d - 5 + 5 = - 15 + 5

9d = - 10 which we have in step 3