回答者可能有财富!132/5+156/5+182/5+210/5+240/5+272/5+306/5+342/5+380/5怎么算?(/就是分数线)

问题描述:

回答者可能有财富!132/5+156/5+182/5+210/5+240/5+272/5+306/5+342/5+380/5怎么算?(/就是分数线)

132/5+156/5+182/5+210/5+240/5+272/5+306/5+342/5+380/5
=5*(132/1+156/1+182/1+210/1+240/1+272/1+306/1+342/1+380/1)
=5*(11/1-12/1+12/1-13/1+13/1-14/1+14/1-15/1+15/1-16/1+16/1-17/1+17/1-18/1+18/1-19/1+19/1-20/1)
=5*(11/1-20/1)
=5*(220/9)
=44/9