The arithmetic sequence is .
(Apply common difference formula: )
(Simplify)
The common difference of sequence is 5.
![\"\"](\"/userfiles/image/steps_images/step1.JPG\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=e72334a4fc089e09e2909139ca721f84.png\")
.![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=f59be854564ddede928f8b3de23d11f2.png\")
(Apply common difference formula: ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=7d9d3bf4ec86f42f06196024de3e598e.png\")
)![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=9479a2e0ee035ce9edee63069f38953a.png\")
(Simplify) ![\"\"](\"/userfiles/image/steps_images/solution.JPG\")