The expression is
According to division property of equality: if , then .
(Divide each side by 10)
(Cancel common terms)
The value of .
![\"\"](\"http://www.mathskey.com/userfiles/image/Library/division_property_of_equality.gif\")
![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/step1.JPG\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=905ebc88c57f585cdad0e7ad6a7260b5.png\")
![\"\"](\"http://www.mathskey.com/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=c3496c16ebb8ec2293d0eb6f139a62e7.png\")
, then ![\"\"](\"http://www.mathskey.com/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=9ffae19a0b3c7934281499f66048ad44.png\")
.![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=6b8fafcead948f2ec979ab54450fcfc8.png\")
(Divide each side by 10) ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=d3722a0df806b8504b8c7a959368920f.png\")
(Cancel common terms) ![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/solution.JPG\")
.