Jawabanmu

2014-09-06T19:24:29+07:00
(1/2x...)-25=25x17 (1/2x...)-25=425 425+25=1/2x... 450/1/2=900
2014-09-06T19:57:27+07:00
(1/2x.....)-25=5x17(1/2x...)=425=425+25=1/2x450/1/2=900