![\"\"](\"/userfiles/image/steps_images/step1.JPG\")
The expression is ![\"\"](\"http://www.mathskey.com/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=d813ccc48da18b9552ec9a5cca037fb3.png\")
.
Place value chart for 5 and 15.
\![\"\"](\"/userfiles/image/Library/Algebra1/placevalurchart_pa34_p30.gif\")
Line up the decimal points and draw a line above the numbers.
\Annex zero to align the numbers.
\![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=311f13ba701bd197bcba7094bd066395.png\")
![\"\"](\"/userfiles/image/steps_images/step2.JPG\")
Next find the difference of the tenths digit.
\The difference of the tenths digit =![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=1dd1093701ed42ecad96b06be81b801e.png\")
.
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=becf9a3be5dc74e52e76373e1d320782.png\")
![\"\"](\"/userfiles/image/steps_images/step3.JPG\")
Next find the difference of the ones digit.
\The difference of the ones digit =![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=d3c16141c5657ca2282303e01be4dd45.png\")
.
\
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=95e95a7e9bb94485a6c3b8304c704144.png\")
![\"\"](\"/userfiles/image/steps_images/solution.JPG\")
\
The difference is -10.
\