Respostas

2014-05-21T09:56:14-03:00
 (9+(5−2×2))×10
=(9+(5-4))x10
=(9+1)x10
=100
2014-05-21T10:00:18-03:00
(9+(5-2x2))x10=
(9+(1))x10=
9+10=
19