The expression is .
(Substitute x = 7.1, y = –2.5)
(Subtract: )
To subtract –9.6 means add 9.6
(Add: 5.3 + 9.6 = 14.9)
The value of expression is 14.9.
![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/step1.JPG\")
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(Substitute x = 7.1, y = –2.5)![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=bcb69e192738a1674a825fb2a677c79a.png\")
(Subtract: ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=a0c9672139964328310346e94954dacc.png\")
)![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=fb600544c18f55ff58cf31ff895f200d.png\")
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(Add: 5.3 + 9.6 = 14.9)![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/solution.JPG\")