\ \
\
The expression is
\
(Substitute
)
\
(Add:
)
\ \
\
The value of the expression is
.
\
![\"\"](\"/userfiles/image/steps_images/step1.JPG\")
\ \
\ \
![\"\"](\"/MathKey/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=37b018e82a5eab6a82c6a34567dbdd9b.png\")
![\"\"](\"/MathKey/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=29e8c9fe4422444573476e4aabb32449.png\")
(Substitute ![\"\"](\"/MathKey/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=0d2f37a0f6c2173915f18788793cb0fc.png\")
)![\"\"](\"/MathKey/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=6e820d1127df05f30dd9c8903b5dda2e.png\")
(Add: ![\"\"](\"/MathKey/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=c91fac64b7b8ce0bf5617aa94ec0650c.png\")
)![\"\"](\"/userfiles/image/steps_images/solution.JPG\")
\ \
![\"\"](\"/MathKey/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=06ac306c1e04807c943a4f4e32fcbd8d.png\")
.