kop - 2 pok + 3 pok
6 asdf - asdf
xz + 6xy
5abc + 6abc
uiy + 7 uiy
7 trs +9 trs
5rt + tr
xyz - 3xt
3asd - 6 asd
-3xy + 4xy + 5xy
no semejante
semejantes
semejante
