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1/20+1/30+1/42+1/56 yukaridaki verilen toplama isleminin sonucu asagidakilerden hangisinin sonucu ile aynidir?
A)(1+1/5)-(1+1/6)-(1+1/7)-(1+1/8)
B)(-1/5)+(-1/6)+(-1/7)+(-1/8)
C)1/5+1/6+1/7+1/8
D)(1/4-1/5)+(1/5-1/6)+(1/6-1/7)+(1/7-1/8)​