Jawabanmu

2014-08-09T18:47:38+07:00
(x - 5y) - (2x + 7 y) 
= x - 5y - 2x - 7y 
= -x - 12y
 
Jawaban paling cerdas!
2014-08-09T18:47:57+07:00
(x-5y) - (2x+7y)
x-2x - 5y-7y
-x - 12y