как решить уравнение 1 1/2x-9 3/7)+5 8/21=6 5/14

(1 1/2x - 9 3/7) + 5 8/21 = 6 5/14(3/2x - 66/7) + 113/21 = 89/143/2x - 66/7 = 89/14 - 113/213/2x - 66/7 = 267/42 - 226/423/2x - 66/7 = (267 - 226)/423/2x - 66/7 = 41/423/2x = 41/42 + 66/73/2x = 41/42 + 396/423/2x = (41 + 396)/423/2x = 437/42х = 437/42 : 3/2х = 437/42 * 2/3х = 2/42 * 437/3х = 1/21 * 437/3х = 437/(21 * 3)х = 437/63х = 6 59/63Ответ: 6 59/63