Помогите решить уравнение:(2 2/3x+1 3/7x)*21=58
( 2 2/3х + 1 3/7х ) • 21 = 58 2 2/3 + 1 3/7 = 2 14/21 + 1 9/21 = 3 23/21 = 4 2/21 ( 4 2/21 )Х • 21 = 58 ( 86/21 )Х = 58/21 86х = 58 Х = 58/86 Х = 29/43