Question

Which properties of equality justify steps b and d?

1. Multiplication Property of Equality; Subtraction Property of Equality

2. Subtraction Property of Equality; Division Property of Equality

3. Subtraction Property of Equality; Multiplication Property of Equality

4. Subtraction Property of Equality; Subtraction Property of Equality

Answer 1

3. Subtraction Property of Equality; Multiplication Property of Equality
Subtracting seven from both sides is the justification for step b to get rid of the positive seven on both sides. Multiplying by 2 on both sides to get rid of the fraction on the left side of the equation is the justification for step d.