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