Jawabanmu

2014-09-06T18:00:12+07:00
(2x+8) + (4x-5-5y)
= 2x+8+4x-5-5y
=2x+4x-5y+8-5
=6x-5y+3

maaf kalo salah:-)

2014-09-06T18:03:42+07:00