Jawabanmu

2014-04-11T13:30:10+07:00
A = 18 b = 7 Un = a + (n-1).b U48 = 18 + 47. 7 U48 = 18 + 329 = 347
2014-04-11T13:43:25+07:00
A + (n-1) b = 18 + (48-1) 7 = 18 + 47.7 = 18 + 329 = 347