Question

Which of the following statements describes a correct method for solving the equation below?

Answer 1

30 + 2w = 2 • (w - 15)

Equation at the end of step 1 :
Step 2 :
Equations which are never true :
Solve : 2 = 0

This equation has no solution.
A a non-zero constant never equals zero.

Solving a Single Variable Equation
Solve : w-15 = 0

Add 15 to both sides of the equation :
w = 15

Answer 2

You are trying to solve for "w", to do so you:

20 + 2w = 50     Subtract 20 on both sides  

2w = 30  Divide 2 on both sides to get "w" by itself

w = 15

Your answer is B