Jawabanmu

2014-08-28T13:43:15+07:00
 \frac{9}{20}  \frac{6}{x}
trs di kali silang 
120 = 9x
x =120/9
= 40/3


sekolah mn?
smp vidya sasana, tanjung balai karimun ,kepulauan riau
Smp widya sasana