The expression is .
§ Start at zero.
§ Move 23 units to the left.
§ From there, move 43 units to the left. \ \
Rewrite the expression,
(Subtract: )
The solution is, .
![\"\"](\"/userfiles/image/steps_images/step1.JPG\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=1a412ab10b47fef1a79604b624a66816.png\")
. ![\"\"](\"/userfiles/image/Library/Algebra1/numberline_pa89_p22.gif\")
![\"\"](\"/userfiles/image/steps_images/step2.JPG\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=e0e439170f0411ecc9605d6061cfe85f.png\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=e0006a7c69a29cfde134f8f8cbf4aa32.png\")
(Subtract: ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=55545acb3277a7d9ed1efaeae62d5cf0.png\")
)![\"\"](\"/userfiles/image/steps_images/solution.JPG\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=e05323e8eae0aec02e5ee15be0a23686.png\")
.