7th Unit 6 Test Written Response

Tyler is rewriting the expression with fewer terms. Here is his work:

Step 1: 6-2x+5+4x

Step 2: (6-2)x+(5+4)x

Step 3: 4x+9x

Step 4: 13x

Tyler's work is incorrect. Identify the step where he made a mistake. Explain or show why this expression is not equivalent to 6-2x+5+4x.

Write an expression equivalent to 6-2x+5+4x that has only two terms.