Question

The equation - 21 = -15 is solved in several steps below. 2 For each step, choose the reason that best justifies it.

Answer 1

3. Simplifying

4 multiplication property of equality.

5. simplifying

Explanation:

y/2 -21+21 = -15+21

To get to the next step we add -21+21 on the left and -15+21 on the right

We are simplifying on each side

Then we multiply by 2 on each side for the next step

We use the multiplication property of equality.

Finally we simplify in the last step