1/3m-3/2n-5/6n-1/6m 先合并同类项,再求值,m=6,n=2 快!

问题描述:

1/3m-3/2n-5/6n-1/6m 先合并同类项,再求值,m=6,n=2 快!

1/3m-3/2n-5/6n-1/6m =1/6m- 7/3n=1/6×6- 7/3×2=-11/3能否写一下合并同类项的过程?1/3m-3/2n-5/6n-1/6m =(1/3m-1/6m )-(3/2n+5/6n)=1/6m- 7/3n=1/6×6- 7/3×2=-11/3