2010+2.6×26-7/5×14

问题描述:

2010+2.6×26-7/5×14

2010+2.6×26-7/5×14
=2010+26×26×0.1-14×14×0.1
=2010+0.1×(26×26-14×14)
=2010+0.1×(26+14)×(26-14)
=2010+0.1×40×12
=2010+48
=2058