Jawabanmu

2014-08-27T22:32:31+07:00
2014-08-27T22:33:24+07:00
(5y - 3x - 4)-(5x - 3y + 7) =(5y + 3y)-(-3x-5x)-(-4+7) = 8y-(-8x)-3 = 8y + 8x - 3