A student solved the equation: x + 2(x + 1) = 17

Step 1: x + 2x + 2 = 17
Step 2: 3x + 2 = 17
Step 3: 3x = 15
Step 4: x = 45
Identify the property used to arrive at Step 1: ________________
What step includes a mistake made from the previous step? ________________
What should have been the correct answer for x? ________________
Fill In The Blanks
Options: Addition Property of Equality, x = 15, Distributive Property, Multiplication Property of Equality, x = 5, Step 4, Step 3, Combine Like Terms, x = 3, Step 2, Answer is correct: x = 45