=9:12
=3/4
26/35
30380.
=10:2+3×4×0,25=10:2+3×4×0,25
=5+3×1=5+3×1
=5+3=8
1. to
2. on
3. on
4. for
5. by
6. on
7. in
8. on
dễ mà