\
The expression is 6
y.
\ \
\
(Substitute
)
\
\
(Multiply:
)
\
\
The
value of the expression
is 12
.
![\"\"](\"/userfiles/image/steps_images/step1.JPG\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=fd9c448dbc4445a010a705f0ebc8699e.png\")
(Substitute ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=a55a5d1c51a89fa4342aee29a59a1bfe.png\")
)![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=497e3ca02116d7188ea6669c409c5a4b.png\")
(Multiply: ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=fc86a91c87699829fc65251c23843b02.png\")
)![\"\"](\"/userfiles/image/steps_images/solution.JPG\")