绗竴璁?/p>
鏁存暟涓庡皬鏁扮殑杩愮畻
涓�
鍩虹鐭ヨ瘑
a-(b+c)=
a
梅
(b
脳
c)=
a-(b-c)=
a
梅
(b
梅
c)=
浜?/p>
渚嬮璁茶瘎
渚?/p>
1.
璁＄畻
91.5+88.8+90.2+270.4+89.6+186.7+91.8
渚?/p>
2
锛?/p>
璁＄畻
25.77+18.54-15.77+31.46
渚?/p>
3.
璁＄畻
48.756-
锛?/p>
35.756+6.75
锛?/p>
渚?/p>
4.
璁＄畻
123+234+345+456+567+678+789
渚?/p>
5.
璁＄畻
2.5
脳
64
脳
0.125
脳
0.5
渚?/p>
6.
璁＄畻
56.8
脳
35.7+56.8
脳
28.5+64.2
脳
43.2