The equations is .
Divide each side by negative 15.
Check:
To check the solution the value of substitute in the original equation .
The solution is true.
The value of .
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.![\"\"](\"http://www.mathskey.com/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=b3fa54b2297389e1c34df4d509ece8c0.png\")
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substitute in the original equation ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=d82481f331ba576871daf5b1d6ed818c.png\")
.![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=6d85e8053ee55aca6afc71295f1e640a.png\")
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![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/solution.JPG\")
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.