The expression is .
(Distributive property: a(b + c) = ab + bc)
(Substitution property: )
The simplified expression is 6m.
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(Distributive property: a(b + c) = ab + bc) ![\"\"](\"/MathKey/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=885133110d0203cb616d6b06273d383c.png\")
(Substitution property: ![\"\"](\"/MathKey/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=bd1b05df9a12f4fb01def394b231df96.png\")
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