數學題!很容易的!~

-2-(1590+1022)-(-1200-1164)
=-2-1590-1220+1120+1164
=-250

咁容易都問= =

250................

-2-(1590+1022)-(1200-1164)
=-2-2612--2364
=2614-2364
=250

-2-(1590+1022)-(-1200-1164)
=-2-15901022+1200+1164
=-250

-250
你只要記住
1.負負得正
2.負正得負
3.正正得正

-2-(1590+1022)-(-1200-1164)=??
-2-(1590+1022)-(-1200-1164)
=-2-1590-1220+1120+1164
=-250
都幾容易

-2-(2612)-(-2364) =
-2-(2612)+2364 =
-2614+2364 = 250
Ans = 250

2007-04-26 20:41:33 補充：
sorry = -250

= -2-2612-2364
= -4978

係唔係0？

43298 ?????