![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/step1.JPG\")
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The expression is ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=fd35565c43fe12a2c5176c3edae123cc.png\")
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First draw anumberline diagram.
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- From zero move 7.3 units right to reach 7.3.
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- Then move 2.1 units left to show the difference of 2.1.
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- Find the final position on the number line.
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The difference of ![\"\"](\"http://www.mathskey.com/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=fd35565c43fe12a2c5176c3edae123cc.png\")
is 5.3.
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![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/solution.JPG\")
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The difference of is 5.3.