Jawabanmu

Jawaban paling cerdas!
2014-08-31T18:15:17+07:00
=-y +12-6+5y-7
=4y-1

smoga bener jawabanku :3
1 5 1
2014-08-31T18:15:48+07:00
-y + 12 - 3x2 + 5y -7
5y-y + 12 -7 - 6
 = 4y -1