Symbols can be used as a shorthand way to represent ideas such as operations, equality, absolute value, and the empty set.
For example, instead of writing minus the absolute value of equals .
The equation is .
![\"\"](\"/userfiles/image/steps_images/step1.JPG\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=0d25261cbf81e1c8bf5afdeff1f7b3e9.png\")
minus the absolute value of ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=22790f539f282101e1b8fb0b72dc7711.png\")
equals ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=cc9a1ac67f7122127836012917cdf306.png\")
.![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=a849cfd7e2c62ff409c0343ab2aa28eb.png\")
.![\"\"](\"/userfiles/image/steps_images/solution.JPG\")
![\"\"](\"http://www.mathskey.com/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=a849cfd7e2c62ff409c0343ab2aa28eb.png\")
.