用数学运算符号把五个3连接起来，组成算式，使它们的结果分别是0，1，2，3，4，5，6，7，8，9

3,6,9=3n 都是3的整数倍
10=3+3+3+1
8=9-1=6+2=3+3+(3+3）除以3
7=3乘以3-（3+3）除以3=9-2
5=3+1+1
4=6-2
2=6除以3
1=3-1-1

(3+3-3-3)×3
=0×3
=0
(3+3)÷3-3÷3
=2-1
=1
(3+3)÷3+3-3
=2+3-3
=2
(3+3)÷3+3÷3
=2+1
=3
(3+3)÷(3+3)+3
=1+3
=4
3÷3+3÷3+3
=1+1+3
=5
(3+3+3)÷3+3
=3+3
=6
3×3-(3+3)÷3
=9-2
=7
(3+3)÷3+3+3
=2+3+3
=8
(3+3)×3-3×3
=18-9
=9

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