如果m、n互为相反数,则(3m-2n)-(7n+12m)+3等于多少?
如果m、n互为相反数,则(3m-2n)-(7n+12m)+3等于多少?
如果m,n互为相反数,求m+2m+3m+4m+5m+5n+4n+3n+2n+n=多少
如果m和n互为相反数,则m+2m+3m+4m+5m+5n+4n+3n+2n+n=
已知M,N互为相反数,那么(3m--2n)--(2m--3n)=多少?
m,n互为相反数,则(3m-2n)-(2m-3n)=______.
m+3与2n-3互为相反数,则m+n等于
若m、n互为相反数,则(3m-2m)-(2m-3n)的值为__________________
m,n互为相反数,则(3m-2n)-(2m-3n)=_______.
若m、n互为相反数,则(5m-3n)-(2m-6n)=
如果m n是互为相反数那么|m减3加n|等于
若m、n互为相反数,则(3m-2n)与(2m-3n)的差为多少
若m,n互为相反数,a,b互为倒数,则2(m+n)-3ab=______.