a/b+c/d=a+c/b+d

林錫麟劉祥通2014-10-272014-10-272006-04-??http://rportal.lib.ntnu.edu.tw/handle/20.500.12235/10931費瑞和運算a/b+c/d=a+c/b+dThe Applications of Farey Sum on Solving Rate Problems