问题
填空题
计算:(m+3m+5m+…+2009m)-(2m+4m+6m+…+2008m)=______.
答案
(m+3m+5m+…+2009m)-(2m+4m+6m+…+2008m)=m+(3m-2m)+(5m-4m)…+(2009m-2008m)=1005m.
计算:(m+3m+5m+…+2009m)-(2m+4m+6m+…+2008m)=______.
(m+3m+5m+…+2009m)-(2m+4m+6m+…+2008m)=m+(3m-2m)+(5m-4m)…+(2009m-2008m)=1005m.