\
The expression is
.
\
First locate -6 then 13 units to right
\
\
\
\
The final position is
–
7
\
\
\
The sum is
–
7
.
\
![\"\"](\"/userfiles/image/steps_images/step1.JPG\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=4a3e11799e4a9469e56c68a67bd2cd31.png\")
. ![\"\"](\"/userfiles/image/Library/graph%20pa9_p66.gif\")
![\"\"](\"/userfiles/image/steps_images/solution.JPG\")