若6m(7-m)=6-2m(3m-15),则m=

m-2m-3m+4m-5m-6m+7m.2004m=? 若6m(7-m)=6-2m(3m-15),则m= (m+3m+5m+7m+.+2009m)-(2m-4m-6m-.-2008m)=? (m+3m+5m+...+2015m)-(2m+4m+6m+...+2014m)= (m+3m+5m.+2013m)-(2m+4m+6m+.+2012m)=? m-2m-3m+4m-5m-6m+7m-8m-9m+...+2002m-2003m-2004m求m的值 计算(m+3m+5m+7m+.+2009m)-(2m+4m+6m+.+2008m) 计算(m+3m+5m+7m+.+2013m)-(2m+4m+6m+.+2012m) (m+3m+5m+7m+.+2011m)-(2m+4m+6m+.+2010m) 要说理由! 计算：m-2m-3m+4m-5m-6m+7m-8m-9m+...+2002m-2003m-2004m m-2m-3m+4m-5m-6m+7m-8m-9m+.+2002m-2003m-2004m 计算：（m+3m+5m+...+2009m)-(2m+4m+6m+...+2008m) (m+3m+5m+...+2009m)-(2m+4m+6m+...2008m) (m+3m+5m+...+2014m)-(2m+4m+6m+...+2013m) (m+3m+5m+...+2013m)-(2m+4m+6m+...+2012m) 计算:(m+3m+5m+...+2009m)-(2m+4m+6m+...+2010m) 先化简 再求值（3+m)(3-m)+m(m-6)-7,其中m=1/2 计算(m+3m+5m……+2009m)—(2m+4m+6m+2008m)=