\
The expression is
\
(Replace
b
with 4)
\
(Add:
)
\
The value of the expression is 13.
\
![\"\"](\"/userfiles/image/steps_images/step1.JPG\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=bbba5313ea611afce169a7aa731ca02b.png\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=43c8ff3e5334c3fcc5608f678499dd95.png\")
(Replace b with 4)![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=3b7b5a4029ca0f108e904522060972e9.png\")
(Add: ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=eb2a588fb74245d27c91cf99b7438cd3.png\")
)![\"\"](\"/userfiles/image/steps_images/solution.JPG\")