????????4?汾????,????4??????????,????4????????
????????4???????????????÷???
????????
????????
?????????
?????????????
??÷???
????????????+??????*172+????*172=????????
???????
?????
??????5701-6663
?????847-975
???У?3%-4%
?????33-45
?????10-14
????????
????+162.5
???+19.5
????+0.4%
???+1.08
???+0.27