Ответы и объяснения

2013-12-01T12:19:03+00:00
5/8 х m - 7\12 х m + 5/6 х m + 1/4=
= (15m-14m+20m)/24+1/4=
=21/24m+1/4=7/8m+1/4=
=7/8m+2/8=7m+2