The expression is
(Commutative property: )
(Associative property: )
(Substitution: )
The value of the expression is 102.
![\"\"](\"/userfiles/image/steps_images/step1.JPG\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=07cc15a5116faccd7ce66f6f6c217b1f.png\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=40ab2cbdd9bca2261db1b5e81b7c60c9.png\")
(Commutative property: ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=94da50b59bf0b0ae6ad23e247f52add8.png\")
)![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=86afef239e44c826b2286507fb4c6bd3.png\")
(Associative property: ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=79e8a5f4bfa0fcabeb75a51394ad609b.png\")
)![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=4040467951d974e925946e959de02978.png\")
(Substitution: ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=c09e01317926e884af0f9339e9c1b56e.png\")
)![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=5042d9d52dbe00769ee3a48a20247dbc.png\")
(Substitution: ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=aa04f1e968a1e03407a89bd62dc4da9a.png\")
)![\"\"](\"/userfiles/image/steps_images/solution.JPG\")