Question

[-4分之1】*【-5又2分之1】+【-0.25】*3.5+【-4分之1】*2

怎么做，求下过程。。亲们，帮帮忙了

Answer 1

=0.25*5.5-0.25*3.5-0.25*2
=0.25*（5.5-3.5-2）
=0.25*0
=0