Jawabanmu

2014-08-31T15:47:59+07:00
9/6 = y/5
3/2 = y/5
5.3 = 2.y
15  = 2y
15/2= y
7,5 = y

x/4 = 9/6
x/4 = 3/2
2x  = 3.4
2x  = 12
x    = 6

x+y= 7,5+6 = 13,5
2014-08-31T15:48:49+07:00