\
\
The expression is
\
\
Substitutive
\
\
(Multiply:
)
\
(Subtract:
)
\
(
)
\
(Subtract:
)
\
The expression is
.
![\"\"](\"/userfiles/image/steps_images/step1.JPG\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=2bd81f54ac16ea1aac69f022bcf97db1.png\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=89d8ba4ac2487c63bf185de226da3ad7.png\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=0d69a4eb54633f41bd0e3356b9586295.png\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=55c6689603c18b31d49f938ea5b56a0f.png\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=99b5634ef6df9ddc099a38d0987226b9.png\")
(Multiply: ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=6937ef43f8dc16c14fba9af780c367b7.png\")
)![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=9daa9f19e8c13a55477d288a77a279fc.png\")
(Subtract: ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=233930bdceb4411175a6082152928c66.png\")
)![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=8e44f4e87806bcf27ee20b9b7a40d078.png\")
(![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=e0de9ee8f43207a6826fde361a781eb7.png\")
)![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=c7fdf760335fab779049ad6fe0a6d350.png\")
(Subtract: ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=1865d97701d50202a95134e36987bb73.png\")
)![\"\"](\"/userfiles/image/steps_images/solution.JPG\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=2b57e8e2a09e617aade4d1adf2084861.png\")
.