Question

Riley solved and equation as shown in the table

Answer 1

Riley made a mistake in step 4.

Explanation:

In step 4, Riley applied the division property of equality to divide both sides of the equation by 2. However, the variable is multiplied by -2, not 2. So, the opposite operation Riley should have done is divide both sides of the equation by -2. Therefore, Riley made a mistake in step 4.

Answer 2

She made the mistake in step 4

She should have divided by -2 not just 2 alone