9stu,-9rst
2abc,-5a^bc
-2ñop, -4ñop
45kl^3m,- kl^3m
-.33yz, .22xyz
-5rs^3t, 0.5rs^3t
-j^3kl, jkl
8.5de, 9de
.22mn^6o, .22mno
abc^2, -2abc^2
-a, -2a
.33yz^3, -yz^3
-1.4fgh, -fg
xy, -xy^2
-qr, -qrs
