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