I am not grasping how to find LCM can you help me
Study these sites.
http://www.helpwithfractions.com/least-common-multiple.html
http://www.math.com/school/subject1/lessons/S1U3L3GL.html
http://www.helpwithfractions.com/least-common-multiple.html
http://www.math.com/school/subject1/lessons/S1U3L3GL.html