![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/step1.JPG\")
Using a proportion that relates the values.
\![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=e52d17b6eee10c570c0e7b854a6ee06a.png\")
(Joint variation)
Substitute ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=e5efa88203445417e08d1936f1305ada.png\")
.
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=c5bda52117210ac32307adbf1c43a7bd.png\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=6cbda6e45a72bbd783d66baaaeb8da20.png\")
(Cross multiplication)
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=90cb1edf8c1068261809669c9368828d.png\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=34fa5c14bd9b7ea937cdd459cad7d172.png\")
(Divide each side by negative 90)
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=b395e121312eb90707edeb6da878ad19.png\")
(Simplify)
Therefore, the value of y is ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=1c20e944066fea5a4e4d8df94f606019.png\")
.![\"\"](\"/userfiles/image/steps_images/solution.JPG\")
The value of y is ![\"\"](\"http://www.mathskey.com/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=1c20e944066fea5a4e4d8df94f606019.png\")
.