(-0.125)乘以(-38/1)-0.125乘以(-48/7)=

问题描述:

(-0.125)乘以(-38/1)-0.125乘以(-48/7)=
是负0.125乘以负8分之25减0.125乘以负8分之39=?

=(-0.125)[(-25/8)+(-39/8)]
=(-1/8)*(-64/8)
=1