Jawabanmu

2014-05-05T19:59:41+07:00
12 + 30 : 5 - 8 x 2 = 
12+6-16=2

18 x 3 - 12 + (-3) = 
54-15=39

7 x (- 7) - 12 + 18 = 
-49+6=-43

200 : (-5) x 10 + 12 =
-40x10+12=
-400+12=-388
2014-05-05T20:09:01+07:00
-12+(30:5)-(8.2)=-12+6-16=-22
(18 x 3) - 12 + (-3) =54-12-3=39
 (7 x (- 7)) - 12 + 18 =-49-12+18=-43
( 200 : (-5))x 10 + 12 =(-40.10)+12=-400+12=388