The equation is .
According to division property of equality: If then, .
(Divide each side by 20)
(Cancel common terms)
(Divide: )
The value of .
![\"\"](\"/userfiles/image/steps_images/step1.JPG\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=23e1f3edee7e3220fd642c696b13e85c.png\")
.![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=c3496c16ebb8ec2293d0eb6f139a62e7.png\")
then, ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=8550263df32bb8cc2e497a11d6f2849c.png\")
.![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=12db3fa16b7e5a2cb458134a258cf115.png\")
(Divide each side by 20)![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=08388afd7e2bd6ca18c0052dac745f03.png\")
(Cancel common terms)![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=d41189cc4729d81503650cc31bbe6ae1.png\")
(Divide: ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=334bb00e911aa5b8b39899a590066169.png\")
)![\"\"](\"/userfiles/image/steps_images/solution.JPG\")
.