6/14和6/13通分,6/14分子分母同时乘以13为78/182,而6/13分子分母同时乘以14为84/182。希望对你有帮助,望采纳,谢谢!
(6×13)/(14×13)=78/182=39/91(6×14)/(13×14)=84/182=42/91