5 by 3 + 3 by 5 Share with your friends Share 0 Vedant Sharma answered this 5/3 + 3/5 Lcm of 3 and 5 = 3 x 5 = 15 = 25/15 + 9/15 = 34/15 = 2 4/15 (Mixed fraction) 0 View Full Answer