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The expression is
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The LCM of 3 and 4 is 12.
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The solution is
.
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.![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=882f40b071f33efcc56fe4007e3ef6c6.png\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=717cdf5314fe81b002ce58dd8643f0a7.png\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=2f0740c048afa688caaa5e28cf2a7890.png\")
.![\"\"](\"/userfiles/image/steps_images/solution.JPG\")
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.