The equation is .
According to multiplication property of equality: If then, .
(Multiply each side by 7)
(Cancel common terms)
(Multiply: )
The value of .
![\"\"](\"/userfiles/image/steps_images/step1.JPG\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=23147334303ced8263fb643f68622137.png\")
.![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=c3496c16ebb8ec2293d0eb6f139a62e7.png\")
then, ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=663cf77a588839b4df658516199107af.png\")
.![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=2d55536aee1404779ff5632f3cc1c6f2.png\")
(Multiply each side by 7)![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=bc4652faf15ec21de14e5d392a666d22.png\")
(Cancel common terms)![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=9d44cbca97d1c973d595853caf5cea4e.png\")
(Multiply: ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=a72e7a2c5383b9baf7cba11a60a8faf1.png\")
)![\"\"](\"/userfiles/image/steps_images/solution.JPG\")
.