The first one looks like:
viij lib xv so vi d Ster(lin)g which in Scotch money is (ie £8/15/6d)
I'm struggling to make out the start of the next line, but since there were 12 Scottish pounds to a pound sterling it should be 12 x £8/15/6d = £105/6/0d. So the first character must be a fancy 'C', and the whole sum is then Cv lib vj so.
The second sum, of which it says the first is a third part, looks like xxvj lib vj so vj d Ster(lin)g (£26/6/6d). It's a long time since I did calculations in £sd, but that seems to work out correctly.