![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/step1.JPG\")
The fraction is ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=46e8d35364e3a90f49919a08244f28cf.png\")
.
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=35f80aad68386de6712dd8cba55caaac.png\")
(Write prime factorization of numerator)
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=5ddc8967ca3f34b1ac03a1610952c9fe.png\")
(Write prime factorization of denominator)
The GCF of 39 and 42 is 3.
\![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=7c3ba618398e347746483500b35c7328.png\")
(Divide numerator and denominator by GCF)![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/solution.JPG\")
The simplest form of the fraction is ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=c77403e70bbddf214d9c990654f2cb59.png\")
.