\
\
The difference is
\
(The product of two defferent signs is negative)
\
(Add:
)
\
The difference is
-14.
\
![\"\"](\"/userfiles/image/steps_images/step1.JPG\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=a739f4d0ff4cd9a341996cdb306a5da1.png\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=27d6aac64b58826641d6450f80ae6f42.png\")
(The product of two defferent signs is negative) ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=65a133ad468511c1a33127ef27cc1870.png\")
(Add: ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=098b8597a6480c2b8c9c63070b3f5146.png\")
)![\"\"](\"/userfiles/image/steps_images/solution.JPG\")