Angela painted 3/8 of a room. todd painted 2/5 of the same room. what part of the room has been painted

If you would like to know what part of the room has been painted, you can calculate this using the following steps:

3/8 of a room + 2/5 of a room = 3/8 + 2/5 = 15/40 + 16/40 = (15 + 16) / 40 = 31/40 of the room

The correct result would be: 31/40 of the room has been painted.

3/8 + 2/5 lcm=40 Answer=31/40