![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/step1.JPG\")
The arithmetic sequence is ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=dc6311199861324ee858361a4bb644a0.png\")
.
Find the common difference by subtracting successive terms.
\The common difference is –4.
\Subtract 4 to last term of the sequence to get the next termin the sequence.
\Continue subtracting 4 untill the next three terms are found.
\23 – 4 = 19, 19 – 4 = 15, and 15 – 4 = 11.![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/solution.JPG\")
The next three terms are 19, 15, 11.