The expression is .
3x can be written as (3)(x)
(Apply commutative property of multiplication: )
(Product of two different signs is negative)
(Multiply: )
The simplified expression is .
![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/step1.JPG\")
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.![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=d28fd6c44815fedebee8ec74df4e9f2b.png\")
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(Apply commutative property of multiplication: ![\"\"](\"http://www.mathskey.com/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=052c9755161f061d2909acb72df48684.png\")
)![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=27d9a3814f0eec01d35b41db71d2e516.png\")
(Product of two different signs is negative)![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=904a1b454f3453687991afc9ba0e4208.png\")
(Multiply: ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=5b5f3c9ae2c6b926c92a8872a51233ab.png\")
) ![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/solution.JPG\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=7a1864c166c02d236d3d089b810eb755.png\")
.