负3.14乘35.2加31.4乘负4.66减3.14乘18.2等于多少?
问题描述:
负3.14乘35.2加31.4乘负4.66减3.14乘18.2等于多少?
答
3.14*(-35.2-46.6-18.2)= -314
答
原式=-3.14*35.2-3.14*46.6-3.14*18.2
=-3.14*(46.6+35.2+18.2)
=-3.14*100
=-314