The expression is .
(Write the expression)
(Apply distributive property: )
(Multiply: )
=21y (Combine like terms)
The simplified expression is 21y.
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![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=4d03795b3a716171cb06092fc4484302.png\")
.![\"\"](\"http://www.mathskey.com/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=4d03795b3a716171cb06092fc4484302.png\")
(Write the expression)![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=539f19365e05d0f3f857d6fee4d9152b.png\")
(Apply distributive property: ![\"\"](\"http://www.mathskey.com/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=2ca759e2ab6e91a6d919095b13a54a03.png\")
)![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=3242611687a1e94519384c2662d84a86.png\")
(Multiply: ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=a26b63b04893334b043c2d112a26ea5b.png\")
)![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/solution.JPG\")
![\"\"](\"http://www.mathskey.com/homework-help/california-pre-algebra-2008/book/36/page/plugins/fckeditor_wiris/integration/showimage.php?formula=3b06abc2d4dbc698ea2b269db83f9cdf.png\")
.