-5/8-(m-1)=11/14 решите
- 5/8 - ( m - 1 ) = 11/14 - 5/8 - m + 1 = 11/14 3/8 - m = 11/14 m = 3/8 - 11/14 m = 42/112 - 88/112 m = - 46/112 m = - 23/56