20Darena: 14m - 19m =
I am going to look at alternate questions
What is 14m-3m =
14 marbles - 3 marbles = 11 marbles so
14m-3m=11m
So for your question if you can work out what 14-19 is then you can just tack the m on the end.
14-14=0
so 14-19 must be less than 0.
How much less than 0? Can you work it out? Let me know what you get and I will tell you whether or not it is correct.