Jawabanmu

Jawaban paling cerdas!
2014-08-25T18:56:29+07:00
(5a-6y+8z)+(7a-9z)-(2y+9z-10)
=5a-6y+8z+7a-9z-2y-9z+10
=12a-8y-10z+10
maaf kalau salah
2014-08-25T18:58:36+07:00
(5a-6y+8z) + (7a-9z ) - ( 2y + 9z -10 )
=5a-6y+8z+7a-9z-2y-9z+10
=12a-8y-10z+10