The expression is
(Substitute in original expression)
(Multiply: )
The value of the expression is 10.
![\"\"](\"/userfiles/image/steps_images/step1.JPG\")
![\"\"](\"/MathKey/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=b28e416094ad459a8363c1a1825dc578.png\")
![\"\"](\"/MathKey/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=6972f825c8c11707a9b0b73474b3ad9f.png\")
(Substitute ![\"\"](\"/MathKey/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=276afea334eac555068bbac049d757a4.png\")
in original expression)![\"\"](\"/MathKey/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=40aed45537a43be7d4dff694b1de635a.png\")
(Multiply: ![\"\"](\"/MathKey/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=e1a9e3a6d9d196f44b34a2dc104571cd.png\")
)![\"\"](\"/userfiles/image/steps_images/solution.JPG\")