~功課~快~ 6/2(2+1)

非常簡單!!!
6/2(2+1)
=6/2(3)
=6/2(3/1)
=6*3/2*1
=18/2
=9

希望可解答到你:)

This Q is asking is a/b(c) = a/(bc) or = (a/b)c

-> Lead to a definition problem.

It is very easy!

6/2(2+1)
=6/2*3
=6/6
+1

2012-07-05 19:06:35 補充：
=1