4целых 1/6:(1/4х+1целая4/15)-1целая 5/6=?
25/6:(1/4x+19/15)=11/6 1/4x+19/15=11/6:25/6; 1/4x+19/15=11/25 1/4x=11/25-19/15; 1/4x=-29/75 x=-29/75:1/4=-116/75