![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/step1.JPG\")
The equation is ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=8a87c6456b26af9a104f77b76bb25c35.png\")
.
Solve by algebraically.
\Apply subtraction property of equality: Subtract 20 from each side.
\![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=47bb50385a60fe52cd85bd26ae092df7.png\")
Apply commutative property of addition: a + b = b + a.
\![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=a023c29324098a8d61152d21c7c5c507.png\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=13b536e692e3dea0ccf05b044b24b04f.png\")
(Simplify)![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/step2.JPG\")
Apply addition property of equality: Add 7x to each side.
\![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=c2451c653ac3c667175ecff47733df33.png\")
Apply commutative property of addition: a + b = b + a.
\![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=8d11f835a98e628f39438f980bc136f7.png\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=a58943a846e4bacc63d40c17768b7a19.png\")
(Simplify)
The related function is f(x) = 15.
\The root of a linear equation is the value of x, when f(x) = 0.
\Since f(x) is always equal to 15, this equation has no solution.![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/solution.JPG\")
The root of the equation ![\"\"](\"http://www.mathskey.com/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=8a87c6456b26af9a104f77b76bb25c35.png\")
has no solution.