Is this correct? If no, help fix it?

Simplify the following problem using the distributive property: 2x + 3y + 2(x – y) – 3x. Show each step in your calculation. Justify each of your steps using number properties.
Answer:
2x + 3y + 2(x - y) - 3x

2x + 3y + 2x - 2y - 3x
2x + 2x + 3y + 2y – 3x
4x + 5y – 3x
9xy – 3x
=12xy

Question

Is this correct? If no, help fix it?

	Simplify the following problem using the distributive property:  2x + 3y + 2(x – y) – 3x. Show each step in your calculation. Justify each of your steps using number properties.
Answer:
2x + 3y + 2(x - y) - 3x 

2x + 3y + 2x - 2y - 3x 
2x + 2x + 3y + 2y – 3x
4x + 5y – 3x
9xy – 3x
=12xy

anonymous · Answer

http://i60.tinypic.com/2m5jtdx.png (for the question)