Jawabanmu

Jawaban paling cerdas!
2014-08-10T20:59:51+07:00
*kelompokan yg sejenis variabelnya kemudian dijumlahkan/dikurangkan

(15x+20y+33)+(-24x+17y-45)
= 15x-24x +20y+17y +33-45
= -9x +37y-12

semoga membantu :-)
1 5 1
2014-08-10T21:01:41+07:00
=(15x+20y+33)+(-24x+17y-45)
=15x+20y+33-24x+17y-45
=15x-24x +20y+17y +33-45
= -9x+37y-12