![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/step1.JPG\")
Let x be the number of bottles of olive oil.
\The cost of one bottle of olive oil is 7 dollars.
\The cost of x bottles of olive oil is 7x dollars.
\The cost of coupon for discount is 5 dollars.
\The total cost, excluding the discount is 16 dollars.
\Therefore, the above situation represent the equation is ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=cc7968c6b4cb6ebd738e24175440c0ae.png\")
.![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/step2.JPG\")
Solve the equation ![\"\"](\"http://www.mathskey.com/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=cc7968c6b4cb6ebd738e24175440c0ae.png\")
for x.
Add 5 to each side.
\![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=ca4e86aa2f33ea837fc4ff9e17563d74.png\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=63269f27dde11beee0b34b6abbe00507.png\")
Divide each side by 7.
\![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=04ab2e01aae3480a00a8a49545243896.png\")
Cancel common terms.
\![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=3f89c150f47be04cb4e1fc55d9016300.png\")
.![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/solution.JPG\")
The number of bottles of olive oil is 3.