简单运算1986-1983+1980-1977+.12-9+6-3
问题描述:
简单运算1986-1983+1980-1977+.12-9+6-3
答
1986-1983+1980-1977+.+12-9+6-3
=(1986-1983)+(1980-1977)+……+(12-9)+(6-3)
=3+3+……+3+3
=3×331(共331个3)
=993