Jawabanmu

2014-05-25T12:30:06+07:00
500 an - ada 2 = 1000 
200 an -ada 7 = 1,400
100 an -ada 1 = 100
________________
total 2,500
1 5 1
2014-05-25T12:32:55+07:00
500x + 200y + 100z = 2.500
500(2) + 200y + 100z = 2.500
200y + 100z = 2.500 - 1.000
200y + 100z = 1.500

jadi, pecahan 200 = 7
       pecahan 100 = 1

 pembuktian = 200(7) + 100(1) + 500(2)
                 = 2.500