Simplifying Expressions with Absolute Value II

Project ID: 
7100020161
Accepted: 
SubArea: 
Type: 
Layout: 
Question: 
Match the expressions that are equal for all real, negative numbers $x$.
Question 1: 
$2x+|2x|$
Answer 1: 
$0$
Question 2: 
$2x-|4x|$
Answer 2: 
$6x$
Question 3: 
$2x-|-x|$
Answer 3: 
$3x$
Question 4: 
$2x-|-3x|$
Answer 4: 
$5x$
Question 5: 
$2x-|2x|$
Answer 5: 

$4x$

Question 6: 
$2x+|4x|$
Answer 6: 
$-2x$
Question 7: 
$-2x+|4x|$
Answer 7: 
$-6x$
Question 8: 
$3x+|2x|$
Answer 8: 
$x$
Question 9: 
$-2x+|3x|$
Answer 9: 
$-5x$