3\14х-0,59=8\21х-1,24
3/14х - 0,59 = 8/21х - 1,24 3/14х -8/21х = - 1,24 + 0,59 9/42х - 16/42х = - 0,65 - 7/42х = - 13/20 х = - 13/20 : ( - 1/6 ) х = ( 13•6 )/20 х = 78/20 х = 3,9