Answer:
1/30
Step-by-step explanation:
1/9 x 3/10 = 3/90 = 1/30
30mx + my + 2nx +ny
———————————
15nx - 2my + nx -2ny
Well, the idea being, that 1 is the 100% unit, so say 0.5 is 50% and so on.
so, let's convert 7 and 7/8 from mixed to improper first.
I ended up with 7/20, but I don't believe it's right. Sorry.