The expression is of 84.
Fraction method:
47 is about 50 and 84 about 85.
Think .
The expression can be of 85.
(Think: )
Using Fraction method, 42.5 is of 84.
![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/step1.JPG\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=2702b20d3b74d22fb595677e0c546c50.png\")
of 84.![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=222e5027d4f6e597df2959f2f57d901b.png\")
.![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=897cfd6ef4365621252f1283c96e1244.png\")
of 85.![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=713cde5c8fd5b84d173a79353b164e69.png\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=c333e60665b6a3d6712209192a4bda5f.png\")
(Think: ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=3e18f169f5b51fad11061d8c27c9e9d1.png\")
)![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=f743afd361b6b0c961cfa80f86149573.png\")
(Think: ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=3cf1c7e76d53f7a4ed3fc11f40a07140.png\")
)![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/solution.JPG\")
![\"\"](\"http://www.mathskey.com/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=2702b20d3b74d22fb595677e0c546c50.png\")
of 84.