如题所述
第1个回答 2019-12-06
9936/35×(-18)
=9936/35×(-36/2)
=9936/35×(-35/2-1/2)
=9936/35×(-35/2)+9936/35×(-1/2)
=-4968-4968/35
=-4968×(1+1/35)
=-4968×36/35
=-178848/35
=9936/35×(-36/2)
=9936/35×(-35/2-1/2)
=9936/35×(-35/2)+9936/35×(-1/2)
=-4968-4968/35
=-4968×(1+1/35)
=-4968×36/35
=-178848/35