![\"\"](\"/userfiles/image/steps_images/step1.JPG\")
\
The expression is ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=30a4038b41ae2910ee35bb10b7b25f47.png\")
.
To subtract fractions the denominators must be equal.
\Find the least common denominator (LCD).
\Multiples of 3: 3,6,9,12,15,18.....
\Multiples of 6: 6,12,18,24......
\The least common multiple of 3 and 6 is 6.
\Rewrite each fraction with a common denominator of 6.
\![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=5d300ace8ce9f25d13c36332be766f5a.png\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=9ac32df1df04b5dde7424134ef7fbd83.png\")
![\"\"](\"/userfiles/image/steps_images/step2.JPG\")
Rewrite fractions using the LCD 6.
\![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=282907c5c04844ccb8ba6551cdf7af93.png\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=5990e81ad127e880cef4a98201422a42.png\")
(Subtract: ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=92ce06d022881026c19d53216c2c472b.png\")
) \ \
![\"\"](\"/userfiles/image/steps_images/solution.JPG\")
The value of the expression is ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=ac7d3a0aaff5d106167e88af433e7f86.png\")
.