(-13又1/3)×1/5+(-5又2/3)×1/5+(-196又1/7)÷5-(+76又1/7)÷5
问题描述:
(-13又1/3)×1/5+(-5又2/3)×1/5+(-196又1/7)÷5-(+76又1/7)÷5
答
(-13又1/3)×1/5+(-5又2/3)×1/5+(-196又1/7)÷5-(+76又1/7)÷5
=【(-13又1/3-5又2/3)-(196又1/7-76又1/7)】×1/5
=【-19-120】×1/5
=-139×1/5
=-27.8