Total length = Sum of the lengths of the three fish.
(Substitute lengths of the three fish)
(Add )
The total length is 12 inches.
![\"\"](\"/userfiles/image/steps_images/step1.JPG\")
![\"\"](\"/MathKey/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=b67b265aab1ea17fc2124a4bd70f0416.png\")
(Substitute lengths of the three fish)![\"\"](\"/MathKey/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=497e3ca02116d7188ea6669c409c5a4b.png\")
(Add ![\"\"](\"/MathKey/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=fa177022716483a7282dd07cb6d1c27d.png\")
)![\"\"](\"/userfiles/image/steps_images/solution.JPG\")