Question

6 5 4 3 2 1 =9，填数学符号，急急急急急急急急急急急急急急急！！！！

7 6 5 4 3 2 1 =9呢？？

Answer 1

6+5-4+3-2+1=9

Answer 2

6*5-(4+3)*(1+2)=9

Answer 3

6+5-4+3-2+1=9
6-5+4+3+2-1=9

Answer 4

6+5-4+3-2+1=9

Answer 5

7-6+5+4-(3-2)*1=9
6+5-4+3-2+1=9