1/13+12/13*(2.5-1/3) 计算

问题描述:

1/13+12/13*(2.5-1/3) 计算

1/13+12/13*(2.5-1/3)
=1/13×[1+12*(2.5-1/3)]
=1/13×[1+30-4]
=1/13×27
=27/13